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mirror_zfs/man/man1/arcstat.1

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Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
.\"
.\" This file and its contents are supplied under the terms of the
.\" Common Development and Distribution License ("CDDL"), version 1.0.
.\" You may only use this file in accordance with the terms of version
.\" 1.0 of the CDDL.
.\"
.\" A full copy of the text of the CDDL should have accompanied this
.\" source. A copy of the CDDL is also available via the Internet at
.\" http://www.illumos.org/license/CDDL.
.\"
.\" Copyright 2014 Adam Stevko. All rights reserved.
.\" Copyright (c) 2015 by Delphix. All rights reserved.
Fix up arcstat(1) to match our version Turns out the illumos manpage, which is what this originates from, was written for the original Perl version of the utility which is not the version in the OpenZFS tree. *That* version originates from a Python rewrite that was done for FreeNAS. So fix up the manpage to match what we actually ship (and fix a few typos in the process). Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 10:49:33 +03:00
.\" Copyright (c) 2020 by AJ Jordan. All rights reserved.
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
.\"
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
.Dd December 23, 2022
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.Dt ARCSTAT 1
.Os
.
.Sh NAME
.Nm arcstat
.Nd report ZFS ARC and L2ARC statistics
.Sh SYNOPSIS
.Nm
.Op Fl havxp
Consistentify miscellaneous style on remaining manpages Most notably this fixes the vdev_id(8) non-.Xrs in vdev_id.conf.5 Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12212
2021-06-04 23:08:50 +03:00
.Op Fl f Ar field Ns Op , Ns Ar field Ns …
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.Op Fl o Ar file
.Op Fl s Ar string
.Op Ar interval
.Op Ar count
.
.Sh DESCRIPTION
.Nm
prints various ZFS ARC and L2ARC statistics in vmstat-like fashion:
Consistentify miscellaneous style on remaining manpages Most notably this fixes the vdev_id(8) non-.Xrs in vdev_id.conf.5 Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12212
2021-06-04 23:08:50 +03:00
.Bl -tag -compact -offset Ds -width "l2asize"
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy c
Fix up arcstat(1) to match our version Turns out the illumos manpage, which is what this originates from, was written for the original Perl version of the utility which is not the version in the OpenZFS tree. *That* version originates from a Python rewrite that was done for FreeNAS. So fix up the manpage to match what we actually ship (and fix a few typos in the process). Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 10:49:33 +03:00
ARC target size
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy dh%
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
Demand hit percentage
.It Sy di%
Demand I/O hit percentage
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy dm%
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
Demand miss percentage
.It Sy ddh%
Demand data hit percentage
.It Sy ddi%
Demand data I/O hit percentage
.It Sy ddm%
Fix up arcstat(1) to match our version Turns out the illumos manpage, which is what this originates from, was written for the original Perl version of the utility which is not the version in the OpenZFS tree. *That* version originates from a Python rewrite that was done for FreeNAS. So fix up the manpage to match what we actually ship (and fix a few typos in the process). Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 10:49:33 +03:00
Demand data miss percentage
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
.It Sy dmh%
Demand metadata hit percentage
.It Sy dmi%
Demand metadata I/O hit percentage
.It Sy dmm%
Demand metadata miss percentage
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy mfu
Fix up arcstat(1) to match our version Turns out the illumos manpage, which is what this originates from, was written for the original Perl version of the utility which is not the version in the OpenZFS tree. *That* version originates from a Python rewrite that was done for FreeNAS. So fix up the manpage to match what we actually ship (and fix a few typos in the process). Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 10:49:33 +03:00
MFU list hits per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy mh%
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Metadata hit percentage
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
.It Sy mi%
Metadata I/O hit percentage
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy mm%
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Metadata miss percentage
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy mru
Fix up arcstat(1) to match our version Turns out the illumos manpage, which is what this originates from, was written for the original Perl version of the utility which is not the version in the OpenZFS tree. *That* version originates from a Python rewrite that was done for FreeNAS. So fix up the manpage to match what we actually ship (and fix a few typos in the process). Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 10:49:33 +03:00
MRU list hits per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy ph%
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Prefetch hits percentage
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
.It Sy pi%
Prefetch I/O hits percentage
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy pm%
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Prefetch miss percentage
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
.It Sy pdh%
Prefetch data hits percentage
.It Sy pdi%
Prefetch data I/O hits percentage
.It Sy pdm%
Prefetch data miss percentage
.It Sy pmh%
Prefetch metadata hits percentage
.It Sy pmi%
Prefetch metadata I/O hits percentage
.It Sy pmm%
Prefetch metadata miss percentage
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy dhit
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
Demand hits per second
.It Sy dioh
Demand I/O hits per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy dmis
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
Demand misses per second
.It Sy ddhit
Demand data hits per second
.It Sy ddioh
Demand data I/O hits per second
.It Sy ddmis
Fix up arcstat(1) to match our version Turns out the illumos manpage, which is what this originates from, was written for the original Perl version of the utility which is not the version in the OpenZFS tree. *That* version originates from a Python rewrite that was done for FreeNAS. So fix up the manpage to match what we actually ship (and fix a few typos in the process). Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 10:49:33 +03:00
Demand data misses per second
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
.It Sy dmhit
Demand metadata hits per second
.It Sy dmioh
Demand metadata I/O hits per second
.It Sy dmmis
Demand metadata misses per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy hit%
Fix up arcstat(1) to match our version Turns out the illumos manpage, which is what this originates from, was written for the original Perl version of the utility which is not the version in the OpenZFS tree. *That* version originates from a Python rewrite that was done for FreeNAS. So fix up the manpage to match what we actually ship (and fix a few typos in the process). Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 10:49:33 +03:00
ARC hit percentage
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy hits
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
ARC hits per second
.It Sy ioh%
ARC I/O hits percentage
.It Sy iohs
ARC I/O hits per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy mfug
Fix up arcstat(1) to match our version Turns out the illumos manpage, which is what this originates from, was written for the original Perl version of the utility which is not the version in the OpenZFS tree. *That* version originates from a Python rewrite that was done for FreeNAS. So fix up the manpage to match what we actually ship (and fix a few typos in the process). Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 10:49:33 +03:00
MFU ghost list hits per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy mhit
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Metadata hits per second
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
.It Sy mioh
Metadata I/O hits per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy miss
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
ARC misses per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy mmis
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Metadata misses per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy mrug
Fix up arcstat(1) to match our version Turns out the illumos manpage, which is what this originates from, was written for the original Perl version of the utility which is not the version in the OpenZFS tree. *That* version originates from a Python rewrite that was done for FreeNAS. So fix up the manpage to match what we actually ship (and fix a few typos in the process). Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 10:49:33 +03:00
MRU ghost list hits per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy phit
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Prefetch hits per second
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
.It Sy pioh
Prefetch I/O hits per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy pmis
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Prefetch misses per second
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
.It Sy pdhit
Prefetch data hits per second
.It Sy pdioh
Prefetch data I/O hits per second
.It Sy pdmis
Prefetch data misses per second
.It Sy pmhit
Prefetch metadata hits per second
.It Sy pmioh
Prefetch metadata I/O hits per second
.It Sy pmmis
Prefetch metadata misses per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy read
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Total ARC accesses per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy time
Current time
.It Sy size
Fix up arcstat(1) to match our version Turns out the illumos manpage, which is what this originates from, was written for the original Perl version of the utility which is not the version in the OpenZFS tree. *That* version originates from a Python rewrite that was done for FreeNAS. So fix up the manpage to match what we actually ship (and fix a few typos in the process). Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 10:49:33 +03:00
ARC size
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy arcsz
Alias for
.Sy size
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
.It Sy unc
Uncached list hits per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy dread
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
Demand accesses per second
.It Sy ddread
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Demand data accesses per second
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
.It Sy dmread
Demand metadata accesses per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy eskip
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
evict_skip per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy miss%
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
ARC miss percentage
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy mread
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Metadata accesses per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy pread
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Prefetch accesses per second
Update arc_summary and arcstat outputs Recent ARC commits added new statistic counters, such as iohits, uncached state, etc. Represent those. Also some of previously reported numbers were confusing or even made no sense. Cleanup and restructure existing reports. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14115 Issue #14123 Issue #14243 Closes #14320
2023-01-05 20:29:13 +03:00
.It Sy pdread
Prefetch data accesses per second
.It Sy pmread
Prefetch metadata accesses per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2hit%
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
L2ARC access hit percentage
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2hits
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
L2ARC hits per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2miss
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
L2ARC misses per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2read
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Total L2ARC accesses per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2pref
Add L2ARC arcstats for MFU/MRU buffers and buffer content type Currently the ARC state (MFU/MRU) of cached L2ARC buffer and their content type is unknown. Knowing this information may prove beneficial in adjusting the L2ARC caching policy. This commit adds L2ARC arcstats that display the aligned size (in bytes) of L2ARC buffers according to their content type (data/metadata) and according to their ARC state (MRU/MFU or prefetch). It also expands the existing evict_l2_eligible arcstat to differentiate between MFU and MRU buffers. L2ARC caches buffers from the MRU and MFU lists of ARC. Upon caching a buffer, its ARC state (MRU/MFU) is stored in the L2 header (b_arcs_state). The l2_m{f,r}u_asize arcstats reflect the aligned size (in bytes) of L2ARC buffers according to their ARC state (based on b_arcs_state). We also account for the case where an L2ARC and ARC cached MRU or MRU_ghost buffer transitions to MFU. The l2_prefetch_asize reflects the alinged size (in bytes) of L2ARC buffers that were cached while they had the prefetch flag set in ARC. This is dynamically updated as the prefetch flag of L2ARC buffers changes. When buffers are evicted from ARC, if they are determined to be L2ARC eligible then their logical size is recorded in evict_l2_eligible_m{r,f}u arcstats according to their ARC state upon eviction. Persistent L2ARC: When committing an L2ARC buffer to a log block (L2ARC metadata) its b_arcs_state and prefetch flag is also stored. If the buffer changes its arcstate or prefetch flag this is reflected in the above arcstats. However, the L2ARC metadata cannot currently be updated to reflect this change. Example: L2ARC caches an MRU buffer. L2ARC metadata and arcstats count this as an MRU buffer. The buffer transitions to MFU. The arcstats are updated to reflect this. Upon pool re-import or on/offlining the L2ARC device the arcstats are cleared and the buffer will now be counted as an MRU buffer, as the L2ARC metadata were not updated. Bug fix: - If l2arc_noprefetch is set, arc_read_done clears the L2CACHE flag of an ARC buffer. However, prefetches may be issued in a way that arc_read_done() is bypassed. Instead, move the related code in l2arc_write_eligible() to account for those cases too. Also add a test and update manpages for l2arc_mfuonly module parameter, and update the manpages and code comments for l2arc_noprefetch. Move persist_l2arc tests to l2arc. Reviewed-by: Ryan Moeller <freqlabs@FreeBSD.org> Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: George Amanakis <gamanakis@gmail.com> Closes #10743
2020-09-14 20:10:44 +03:00
L2ARC prefetch allocated size per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2pref%
Add L2ARC arcstats for MFU/MRU buffers and buffer content type Currently the ARC state (MFU/MRU) of cached L2ARC buffer and their content type is unknown. Knowing this information may prove beneficial in adjusting the L2ARC caching policy. This commit adds L2ARC arcstats that display the aligned size (in bytes) of L2ARC buffers according to their content type (data/metadata) and according to their ARC state (MRU/MFU or prefetch). It also expands the existing evict_l2_eligible arcstat to differentiate between MFU and MRU buffers. L2ARC caches buffers from the MRU and MFU lists of ARC. Upon caching a buffer, its ARC state (MRU/MFU) is stored in the L2 header (b_arcs_state). The l2_m{f,r}u_asize arcstats reflect the aligned size (in bytes) of L2ARC buffers according to their ARC state (based on b_arcs_state). We also account for the case where an L2ARC and ARC cached MRU or MRU_ghost buffer transitions to MFU. The l2_prefetch_asize reflects the alinged size (in bytes) of L2ARC buffers that were cached while they had the prefetch flag set in ARC. This is dynamically updated as the prefetch flag of L2ARC buffers changes. When buffers are evicted from ARC, if they are determined to be L2ARC eligible then their logical size is recorded in evict_l2_eligible_m{r,f}u arcstats according to their ARC state upon eviction. Persistent L2ARC: When committing an L2ARC buffer to a log block (L2ARC metadata) its b_arcs_state and prefetch flag is also stored. If the buffer changes its arcstate or prefetch flag this is reflected in the above arcstats. However, the L2ARC metadata cannot currently be updated to reflect this change. Example: L2ARC caches an MRU buffer. L2ARC metadata and arcstats count this as an MRU buffer. The buffer transitions to MFU. The arcstats are updated to reflect this. Upon pool re-import or on/offlining the L2ARC device the arcstats are cleared and the buffer will now be counted as an MRU buffer, as the L2ARC metadata were not updated. Bug fix: - If l2arc_noprefetch is set, arc_read_done clears the L2CACHE flag of an ARC buffer. However, prefetches may be issued in a way that arc_read_done() is bypassed. Instead, move the related code in l2arc_write_eligible() to account for those cases too. Also add a test and update manpages for l2arc_mfuonly module parameter, and update the manpages and code comments for l2arc_noprefetch. Move persist_l2arc tests to l2arc. Reviewed-by: Ryan Moeller <freqlabs@FreeBSD.org> Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: George Amanakis <gamanakis@gmail.com> Closes #10743
2020-09-14 20:10:44 +03:00
L2ARC prefetch allocated size percentage
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2mfu
Add L2ARC arcstats for MFU/MRU buffers and buffer content type Currently the ARC state (MFU/MRU) of cached L2ARC buffer and their content type is unknown. Knowing this information may prove beneficial in adjusting the L2ARC caching policy. This commit adds L2ARC arcstats that display the aligned size (in bytes) of L2ARC buffers according to their content type (data/metadata) and according to their ARC state (MRU/MFU or prefetch). It also expands the existing evict_l2_eligible arcstat to differentiate between MFU and MRU buffers. L2ARC caches buffers from the MRU and MFU lists of ARC. Upon caching a buffer, its ARC state (MRU/MFU) is stored in the L2 header (b_arcs_state). The l2_m{f,r}u_asize arcstats reflect the aligned size (in bytes) of L2ARC buffers according to their ARC state (based on b_arcs_state). We also account for the case where an L2ARC and ARC cached MRU or MRU_ghost buffer transitions to MFU. The l2_prefetch_asize reflects the alinged size (in bytes) of L2ARC buffers that were cached while they had the prefetch flag set in ARC. This is dynamically updated as the prefetch flag of L2ARC buffers changes. When buffers are evicted from ARC, if they are determined to be L2ARC eligible then their logical size is recorded in evict_l2_eligible_m{r,f}u arcstats according to their ARC state upon eviction. Persistent L2ARC: When committing an L2ARC buffer to a log block (L2ARC metadata) its b_arcs_state and prefetch flag is also stored. If the buffer changes its arcstate or prefetch flag this is reflected in the above arcstats. However, the L2ARC metadata cannot currently be updated to reflect this change. Example: L2ARC caches an MRU buffer. L2ARC metadata and arcstats count this as an MRU buffer. The buffer transitions to MFU. The arcstats are updated to reflect this. Upon pool re-import or on/offlining the L2ARC device the arcstats are cleared and the buffer will now be counted as an MRU buffer, as the L2ARC metadata were not updated. Bug fix: - If l2arc_noprefetch is set, arc_read_done clears the L2CACHE flag of an ARC buffer. However, prefetches may be issued in a way that arc_read_done() is bypassed. Instead, move the related code in l2arc_write_eligible() to account for those cases too. Also add a test and update manpages for l2arc_mfuonly module parameter, and update the manpages and code comments for l2arc_noprefetch. Move persist_l2arc tests to l2arc. Reviewed-by: Ryan Moeller <freqlabs@FreeBSD.org> Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: George Amanakis <gamanakis@gmail.com> Closes #10743
2020-09-14 20:10:44 +03:00
L2ARC MFU allocated size per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2mfu%
Add L2ARC arcstats for MFU/MRU buffers and buffer content type Currently the ARC state (MFU/MRU) of cached L2ARC buffer and their content type is unknown. Knowing this information may prove beneficial in adjusting the L2ARC caching policy. This commit adds L2ARC arcstats that display the aligned size (in bytes) of L2ARC buffers according to their content type (data/metadata) and according to their ARC state (MRU/MFU or prefetch). It also expands the existing evict_l2_eligible arcstat to differentiate between MFU and MRU buffers. L2ARC caches buffers from the MRU and MFU lists of ARC. Upon caching a buffer, its ARC state (MRU/MFU) is stored in the L2 header (b_arcs_state). The l2_m{f,r}u_asize arcstats reflect the aligned size (in bytes) of L2ARC buffers according to their ARC state (based on b_arcs_state). We also account for the case where an L2ARC and ARC cached MRU or MRU_ghost buffer transitions to MFU. The l2_prefetch_asize reflects the alinged size (in bytes) of L2ARC buffers that were cached while they had the prefetch flag set in ARC. This is dynamically updated as the prefetch flag of L2ARC buffers changes. When buffers are evicted from ARC, if they are determined to be L2ARC eligible then their logical size is recorded in evict_l2_eligible_m{r,f}u arcstats according to their ARC state upon eviction. Persistent L2ARC: When committing an L2ARC buffer to a log block (L2ARC metadata) its b_arcs_state and prefetch flag is also stored. If the buffer changes its arcstate or prefetch flag this is reflected in the above arcstats. However, the L2ARC metadata cannot currently be updated to reflect this change. Example: L2ARC caches an MRU buffer. L2ARC metadata and arcstats count this as an MRU buffer. The buffer transitions to MFU. The arcstats are updated to reflect this. Upon pool re-import or on/offlining the L2ARC device the arcstats are cleared and the buffer will now be counted as an MRU buffer, as the L2ARC metadata were not updated. Bug fix: - If l2arc_noprefetch is set, arc_read_done clears the L2CACHE flag of an ARC buffer. However, prefetches may be issued in a way that arc_read_done() is bypassed. Instead, move the related code in l2arc_write_eligible() to account for those cases too. Also add a test and update manpages for l2arc_mfuonly module parameter, and update the manpages and code comments for l2arc_noprefetch. Move persist_l2arc tests to l2arc. Reviewed-by: Ryan Moeller <freqlabs@FreeBSD.org> Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: George Amanakis <gamanakis@gmail.com> Closes #10743
2020-09-14 20:10:44 +03:00
L2ARC MFU allocated size percentage
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2mru
Add L2ARC arcstats for MFU/MRU buffers and buffer content type Currently the ARC state (MFU/MRU) of cached L2ARC buffer and their content type is unknown. Knowing this information may prove beneficial in adjusting the L2ARC caching policy. This commit adds L2ARC arcstats that display the aligned size (in bytes) of L2ARC buffers according to their content type (data/metadata) and according to their ARC state (MRU/MFU or prefetch). It also expands the existing evict_l2_eligible arcstat to differentiate between MFU and MRU buffers. L2ARC caches buffers from the MRU and MFU lists of ARC. Upon caching a buffer, its ARC state (MRU/MFU) is stored in the L2 header (b_arcs_state). The l2_m{f,r}u_asize arcstats reflect the aligned size (in bytes) of L2ARC buffers according to their ARC state (based on b_arcs_state). We also account for the case where an L2ARC and ARC cached MRU or MRU_ghost buffer transitions to MFU. The l2_prefetch_asize reflects the alinged size (in bytes) of L2ARC buffers that were cached while they had the prefetch flag set in ARC. This is dynamically updated as the prefetch flag of L2ARC buffers changes. When buffers are evicted from ARC, if they are determined to be L2ARC eligible then their logical size is recorded in evict_l2_eligible_m{r,f}u arcstats according to their ARC state upon eviction. Persistent L2ARC: When committing an L2ARC buffer to a log block (L2ARC metadata) its b_arcs_state and prefetch flag is also stored. If the buffer changes its arcstate or prefetch flag this is reflected in the above arcstats. However, the L2ARC metadata cannot currently be updated to reflect this change. Example: L2ARC caches an MRU buffer. L2ARC metadata and arcstats count this as an MRU buffer. The buffer transitions to MFU. The arcstats are updated to reflect this. Upon pool re-import or on/offlining the L2ARC device the arcstats are cleared and the buffer will now be counted as an MRU buffer, as the L2ARC metadata were not updated. Bug fix: - If l2arc_noprefetch is set, arc_read_done clears the L2CACHE flag of an ARC buffer. However, prefetches may be issued in a way that arc_read_done() is bypassed. Instead, move the related code in l2arc_write_eligible() to account for those cases too. Also add a test and update manpages for l2arc_mfuonly module parameter, and update the manpages and code comments for l2arc_noprefetch. Move persist_l2arc tests to l2arc. Reviewed-by: Ryan Moeller <freqlabs@FreeBSD.org> Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: George Amanakis <gamanakis@gmail.com> Closes #10743
2020-09-14 20:10:44 +03:00
L2ARC MRU allocated size per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2mru%
Add L2ARC arcstats for MFU/MRU buffers and buffer content type Currently the ARC state (MFU/MRU) of cached L2ARC buffer and their content type is unknown. Knowing this information may prove beneficial in adjusting the L2ARC caching policy. This commit adds L2ARC arcstats that display the aligned size (in bytes) of L2ARC buffers according to their content type (data/metadata) and according to their ARC state (MRU/MFU or prefetch). It also expands the existing evict_l2_eligible arcstat to differentiate between MFU and MRU buffers. L2ARC caches buffers from the MRU and MFU lists of ARC. Upon caching a buffer, its ARC state (MRU/MFU) is stored in the L2 header (b_arcs_state). The l2_m{f,r}u_asize arcstats reflect the aligned size (in bytes) of L2ARC buffers according to their ARC state (based on b_arcs_state). We also account for the case where an L2ARC and ARC cached MRU or MRU_ghost buffer transitions to MFU. The l2_prefetch_asize reflects the alinged size (in bytes) of L2ARC buffers that were cached while they had the prefetch flag set in ARC. This is dynamically updated as the prefetch flag of L2ARC buffers changes. When buffers are evicted from ARC, if they are determined to be L2ARC eligible then their logical size is recorded in evict_l2_eligible_m{r,f}u arcstats according to their ARC state upon eviction. Persistent L2ARC: When committing an L2ARC buffer to a log block (L2ARC metadata) its b_arcs_state and prefetch flag is also stored. If the buffer changes its arcstate or prefetch flag this is reflected in the above arcstats. However, the L2ARC metadata cannot currently be updated to reflect this change. Example: L2ARC caches an MRU buffer. L2ARC metadata and arcstats count this as an MRU buffer. The buffer transitions to MFU. The arcstats are updated to reflect this. Upon pool re-import or on/offlining the L2ARC device the arcstats are cleared and the buffer will now be counted as an MRU buffer, as the L2ARC metadata were not updated. Bug fix: - If l2arc_noprefetch is set, arc_read_done clears the L2CACHE flag of an ARC buffer. However, prefetches may be issued in a way that arc_read_done() is bypassed. Instead, move the related code in l2arc_write_eligible() to account for those cases too. Also add a test and update manpages for l2arc_mfuonly module parameter, and update the manpages and code comments for l2arc_noprefetch. Move persist_l2arc tests to l2arc. Reviewed-by: Ryan Moeller <freqlabs@FreeBSD.org> Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: George Amanakis <gamanakis@gmail.com> Closes #10743
2020-09-14 20:10:44 +03:00
L2ARC MRU allocated size percentage
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2data
Add L2ARC arcstats for MFU/MRU buffers and buffer content type Currently the ARC state (MFU/MRU) of cached L2ARC buffer and their content type is unknown. Knowing this information may prove beneficial in adjusting the L2ARC caching policy. This commit adds L2ARC arcstats that display the aligned size (in bytes) of L2ARC buffers according to their content type (data/metadata) and according to their ARC state (MRU/MFU or prefetch). It also expands the existing evict_l2_eligible arcstat to differentiate between MFU and MRU buffers. L2ARC caches buffers from the MRU and MFU lists of ARC. Upon caching a buffer, its ARC state (MRU/MFU) is stored in the L2 header (b_arcs_state). The l2_m{f,r}u_asize arcstats reflect the aligned size (in bytes) of L2ARC buffers according to their ARC state (based on b_arcs_state). We also account for the case where an L2ARC and ARC cached MRU or MRU_ghost buffer transitions to MFU. The l2_prefetch_asize reflects the alinged size (in bytes) of L2ARC buffers that were cached while they had the prefetch flag set in ARC. This is dynamically updated as the prefetch flag of L2ARC buffers changes. When buffers are evicted from ARC, if they are determined to be L2ARC eligible then their logical size is recorded in evict_l2_eligible_m{r,f}u arcstats according to their ARC state upon eviction. Persistent L2ARC: When committing an L2ARC buffer to a log block (L2ARC metadata) its b_arcs_state and prefetch flag is also stored. If the buffer changes its arcstate or prefetch flag this is reflected in the above arcstats. However, the L2ARC metadata cannot currently be updated to reflect this change. Example: L2ARC caches an MRU buffer. L2ARC metadata and arcstats count this as an MRU buffer. The buffer transitions to MFU. The arcstats are updated to reflect this. Upon pool re-import or on/offlining the L2ARC device the arcstats are cleared and the buffer will now be counted as an MRU buffer, as the L2ARC metadata were not updated. Bug fix: - If l2arc_noprefetch is set, arc_read_done clears the L2CACHE flag of an ARC buffer. However, prefetches may be issued in a way that arc_read_done() is bypassed. Instead, move the related code in l2arc_write_eligible() to account for those cases too. Also add a test and update manpages for l2arc_mfuonly module parameter, and update the manpages and code comments for l2arc_noprefetch. Move persist_l2arc tests to l2arc. Reviewed-by: Ryan Moeller <freqlabs@FreeBSD.org> Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: George Amanakis <gamanakis@gmail.com> Closes #10743
2020-09-14 20:10:44 +03:00
L2ARC data (buf content) allocated size per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2data%
Add L2ARC arcstats for MFU/MRU buffers and buffer content type Currently the ARC state (MFU/MRU) of cached L2ARC buffer and their content type is unknown. Knowing this information may prove beneficial in adjusting the L2ARC caching policy. This commit adds L2ARC arcstats that display the aligned size (in bytes) of L2ARC buffers according to their content type (data/metadata) and according to their ARC state (MRU/MFU or prefetch). It also expands the existing evict_l2_eligible arcstat to differentiate between MFU and MRU buffers. L2ARC caches buffers from the MRU and MFU lists of ARC. Upon caching a buffer, its ARC state (MRU/MFU) is stored in the L2 header (b_arcs_state). The l2_m{f,r}u_asize arcstats reflect the aligned size (in bytes) of L2ARC buffers according to their ARC state (based on b_arcs_state). We also account for the case where an L2ARC and ARC cached MRU or MRU_ghost buffer transitions to MFU. The l2_prefetch_asize reflects the alinged size (in bytes) of L2ARC buffers that were cached while they had the prefetch flag set in ARC. This is dynamically updated as the prefetch flag of L2ARC buffers changes. When buffers are evicted from ARC, if they are determined to be L2ARC eligible then their logical size is recorded in evict_l2_eligible_m{r,f}u arcstats according to their ARC state upon eviction. Persistent L2ARC: When committing an L2ARC buffer to a log block (L2ARC metadata) its b_arcs_state and prefetch flag is also stored. If the buffer changes its arcstate or prefetch flag this is reflected in the above arcstats. However, the L2ARC metadata cannot currently be updated to reflect this change. Example: L2ARC caches an MRU buffer. L2ARC metadata and arcstats count this as an MRU buffer. The buffer transitions to MFU. The arcstats are updated to reflect this. Upon pool re-import or on/offlining the L2ARC device the arcstats are cleared and the buffer will now be counted as an MRU buffer, as the L2ARC metadata were not updated. Bug fix: - If l2arc_noprefetch is set, arc_read_done clears the L2CACHE flag of an ARC buffer. However, prefetches may be issued in a way that arc_read_done() is bypassed. Instead, move the related code in l2arc_write_eligible() to account for those cases too. Also add a test and update manpages for l2arc_mfuonly module parameter, and update the manpages and code comments for l2arc_noprefetch. Move persist_l2arc tests to l2arc. Reviewed-by: Ryan Moeller <freqlabs@FreeBSD.org> Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: George Amanakis <gamanakis@gmail.com> Closes #10743
2020-09-14 20:10:44 +03:00
L2ARC data (buf content) allocated size percentage
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2meta
Add L2ARC arcstats for MFU/MRU buffers and buffer content type Currently the ARC state (MFU/MRU) of cached L2ARC buffer and their content type is unknown. Knowing this information may prove beneficial in adjusting the L2ARC caching policy. This commit adds L2ARC arcstats that display the aligned size (in bytes) of L2ARC buffers according to their content type (data/metadata) and according to their ARC state (MRU/MFU or prefetch). It also expands the existing evict_l2_eligible arcstat to differentiate between MFU and MRU buffers. L2ARC caches buffers from the MRU and MFU lists of ARC. Upon caching a buffer, its ARC state (MRU/MFU) is stored in the L2 header (b_arcs_state). The l2_m{f,r}u_asize arcstats reflect the aligned size (in bytes) of L2ARC buffers according to their ARC state (based on b_arcs_state). We also account for the case where an L2ARC and ARC cached MRU or MRU_ghost buffer transitions to MFU. The l2_prefetch_asize reflects the alinged size (in bytes) of L2ARC buffers that were cached while they had the prefetch flag set in ARC. This is dynamically updated as the prefetch flag of L2ARC buffers changes. When buffers are evicted from ARC, if they are determined to be L2ARC eligible then their logical size is recorded in evict_l2_eligible_m{r,f}u arcstats according to their ARC state upon eviction. Persistent L2ARC: When committing an L2ARC buffer to a log block (L2ARC metadata) its b_arcs_state and prefetch flag is also stored. If the buffer changes its arcstate or prefetch flag this is reflected in the above arcstats. However, the L2ARC metadata cannot currently be updated to reflect this change. Example: L2ARC caches an MRU buffer. L2ARC metadata and arcstats count this as an MRU buffer. The buffer transitions to MFU. The arcstats are updated to reflect this. Upon pool re-import or on/offlining the L2ARC device the arcstats are cleared and the buffer will now be counted as an MRU buffer, as the L2ARC metadata were not updated. Bug fix: - If l2arc_noprefetch is set, arc_read_done clears the L2CACHE flag of an ARC buffer. However, prefetches may be issued in a way that arc_read_done() is bypassed. Instead, move the related code in l2arc_write_eligible() to account for those cases too. Also add a test and update manpages for l2arc_mfuonly module parameter, and update the manpages and code comments for l2arc_noprefetch. Move persist_l2arc tests to l2arc. Reviewed-by: Ryan Moeller <freqlabs@FreeBSD.org> Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: George Amanakis <gamanakis@gmail.com> Closes #10743
2020-09-14 20:10:44 +03:00
L2ARC metadata (buf content) allocated size per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2meta%
Add L2ARC arcstats for MFU/MRU buffers and buffer content type Currently the ARC state (MFU/MRU) of cached L2ARC buffer and their content type is unknown. Knowing this information may prove beneficial in adjusting the L2ARC caching policy. This commit adds L2ARC arcstats that display the aligned size (in bytes) of L2ARC buffers according to their content type (data/metadata) and according to their ARC state (MRU/MFU or prefetch). It also expands the existing evict_l2_eligible arcstat to differentiate between MFU and MRU buffers. L2ARC caches buffers from the MRU and MFU lists of ARC. Upon caching a buffer, its ARC state (MRU/MFU) is stored in the L2 header (b_arcs_state). The l2_m{f,r}u_asize arcstats reflect the aligned size (in bytes) of L2ARC buffers according to their ARC state (based on b_arcs_state). We also account for the case where an L2ARC and ARC cached MRU or MRU_ghost buffer transitions to MFU. The l2_prefetch_asize reflects the alinged size (in bytes) of L2ARC buffers that were cached while they had the prefetch flag set in ARC. This is dynamically updated as the prefetch flag of L2ARC buffers changes. When buffers are evicted from ARC, if they are determined to be L2ARC eligible then their logical size is recorded in evict_l2_eligible_m{r,f}u arcstats according to their ARC state upon eviction. Persistent L2ARC: When committing an L2ARC buffer to a log block (L2ARC metadata) its b_arcs_state and prefetch flag is also stored. If the buffer changes its arcstate or prefetch flag this is reflected in the above arcstats. However, the L2ARC metadata cannot currently be updated to reflect this change. Example: L2ARC caches an MRU buffer. L2ARC metadata and arcstats count this as an MRU buffer. The buffer transitions to MFU. The arcstats are updated to reflect this. Upon pool re-import or on/offlining the L2ARC device the arcstats are cleared and the buffer will now be counted as an MRU buffer, as the L2ARC metadata were not updated. Bug fix: - If l2arc_noprefetch is set, arc_read_done clears the L2CACHE flag of an ARC buffer. However, prefetches may be issued in a way that arc_read_done() is bypassed. Instead, move the related code in l2arc_write_eligible() to account for those cases too. Also add a test and update manpages for l2arc_mfuonly module parameter, and update the manpages and code comments for l2arc_noprefetch. Move persist_l2arc tests to l2arc. Reviewed-by: Ryan Moeller <freqlabs@FreeBSD.org> Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: George Amanakis <gamanakis@gmail.com> Closes #10743
2020-09-14 20:10:44 +03:00
L2ARC metadata (buf content) allocated size percentage
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2size
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Size of the L2ARC
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy mtxmis
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
mutex_miss per second
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2bytes
Fix up arcstat(1) to match our version Turns out the illumos manpage, which is what this originates from, was written for the original Perl version of the utility which is not the version in the OpenZFS tree. *That* version originates from a Python rewrite that was done for FreeNAS. So fix up the manpage to match what we actually ship (and fix a few typos in the process). Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 10:49:33 +03:00
Bytes read per second from the L2ARC
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2miss%
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
L2ARC access miss percentage
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy l2asize
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Actual (compressed) size of the L2ARC
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy grow
Fix up arcstat(1) to match our version Turns out the illumos manpage, which is what this originates from, was written for the original Perl version of the utility which is not the version in the OpenZFS tree. *That* version originates from a Python rewrite that was done for FreeNAS. So fix up the manpage to match what we actually ship (and fix a few typos in the process). Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 10:49:33 +03:00
ARC grow disabled
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy need
Fix up arcstat(1) to match our version Turns out the illumos manpage, which is what this originates from, was written for the original Perl version of the utility which is not the version in the OpenZFS tree. *That* version originates from a Python rewrite that was done for FreeNAS. So fix up the manpage to match what we actually ship (and fix a few typos in the process). Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 10:49:33 +03:00
ARC reclaim needed
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Sy free
Ubuntu 22.04 integration: mancheck Correct new mandoc errors. ``` STYLE: input text line longer than 80 bytes STYLE: no blank before trailing delimiter ``` Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu> Reviewed-by: George Melikov <mail@gmelikov.ru> Signed-off-by: szubersk <szuberskidamian@gmail.com> Closes #14148
2022-11-12 15:23:30 +03:00
The ARC's idea of how much free memory there is, which includes evictable memory
in the page cache.
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
Since the ARC tries to keep
.Sy avail
above zero,
.Sy avail
is usually more instructive to observe than
.Sy free .
.It Sy avail
Ubuntu 22.04 integration: mancheck Correct new mandoc errors. ``` STYLE: input text line longer than 80 bytes STYLE: no blank before trailing delimiter ``` Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu> Reviewed-by: George Melikov <mail@gmelikov.ru> Signed-off-by: szubersk <szuberskidamian@gmail.com> Closes #14148
2022-11-12 15:23:30 +03:00
The ARC's idea of how much free memory is available to it, which is a bit less
than
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.Sy free .
May temporarily be negative, in which case the ARC will reduce the target size
.Sy c .
.El
.
.Sh OPTIONS
.Bl -tag -width "-v"
.It Fl a
arcstat: Add -a and -p options from FreeNAS Added -a option to automatically print all valid statistics. Added -p option to suppress scaling of printed data. Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Authored by: Nick Principe <32284693+powernap@users.noreply.github.com> Ported-by: Ryan Moeller <ryan@iXsystems.com> Signed-off-by: Ryan Moeller <ryan@iXsystems.com> Closes #11090
2020-10-22 00:09:14 +03:00
Print all possible stats.
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Fl f
Display only specific fields.
See
Consistentify miscellaneous style on remaining manpages Most notably this fixes the vdev_id(8) non-.Xrs in vdev_id.conf.5 Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12212
2021-06-04 23:08:50 +03:00
.Sx DESCRIPTION
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
for supported statistics.
.It Fl h
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Display help message.
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Fl o
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Report statistics to a file instead of the standard output.
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Fl p
arcstat: Add -a and -p options from FreeNAS Added -a option to automatically print all valid statistics. Added -p option to suppress scaling of printed data. Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Authored by: Nick Principe <32284693+powernap@users.noreply.github.com> Ported-by: Ryan Moeller <ryan@iXsystems.com> Signed-off-by: Ryan Moeller <ryan@iXsystems.com> Closes #11090
2020-10-22 00:09:14 +03:00
Disable auto-scaling of numerical fields (for raw, machine-parsable values).
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Fl s
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Display data with a specified separator (default: 2 spaces).
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Fl x
Consistentify miscellaneous style on remaining manpages Most notably this fixes the vdev_id(8) non-.Xrs in vdev_id.conf.5 Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12212
2021-06-04 23:08:50 +03:00
Print extended stats
.Pq same as Fl f Sy time , Ns Sy mfu , Ns Sy mru , Ns Sy mfug , Ns Sy mrug , Ns Sy eskip , Ns Sy mtxmis , Ns Sy dread , Ns Sy pread , Ns Sy read .
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Fl v
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Show field headers and definitions
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.El
.
.Sh OPERANDS
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
The following operands are supported:
Consistentify miscellaneous style on remaining manpages Most notably this fixes the vdev_id(8) non-.Xrs in vdev_id.conf.5 Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12212
2021-06-04 23:08:50 +03:00
.Bl -tag -compact -offset Ds -width "interval"
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Ar interval
Import the arcstat(1m) manpage from illumos And move it from section 1m to section 1 for consistency. Imported from illumos commit f34d737f. Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: AJ Jordan <alex@strugee.net> Closes #10288
2020-05-04 05:23:46 +03:00
Specify the sampling interval in seconds.
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.It Ar count
Consistentify miscellaneous style on remaining manpages Most notably this fixes the vdev_id(8) non-.Xrs in vdev_id.conf.5 Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12212
2021-06-04 23:08:50 +03:00
Display only
.Ar count
reports.
arcstat.1: modernise Also slim down the description a tad Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
2021-05-26 15:27:13 +03:00
.El
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