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As part of the large block support effort, it makes sense to add support for large blocks to **zpios(1)**. The specifying of a zfs block size for zpios is optional and will default to 128K if the block size is not specified. `zpios ... -S size | --blocksize size ...` This will use *size* ZFS blocks for each test, specified as a comma delimited list with an optional unit suffix. The supported range is powers of two from 128K through 16M. A range of block sizes can be tested as follows: `-S 128K,256K,512K,1M` Example run below (non realistic results from a VM and output abbreviated for space) ``` --regioncount=750 --regionsize=8M --chunksize=1M --offset=4K --threaddelay=0 --cleanup --human-readable --verbose --cleanup --blocksize=128K,256K,512K,1M th-cnt rg-cnt rg-sz ch-sz blksz wr-data wr-bw rd-data rd-bw --------------------------------------------------------------------- 4 750 8m 1m 128k 5g 90.06m 5g 93.37m 4 750 8m 1m 256k 5g 79.71m 5g 99.81m 4 750 8m 1m 512k 5g 42.20m 5g 93.14m 4 750 8m 1m 1m 5g 35.51m 5g 89.36m 8 750 8m 1m 128k 5g 85.49m 5g 90.81m 8 750 8m 1m 256k 5g 61.42m 5g 99.24m 8 750 8m 1m 512k 5g 49.09m 5g 108.78m 16 750 8m 1m 128k 5g 86.28m 5g 88.73m 16 750 8m 1m 256k 5g 64.34m 5g 93.47m 16 750 8m 1m 512k 5g 68.84m 5g 124.47m 16 750 8m 1m 1m 5g 53.97m 5g 97.20m --------------------------------------------------------------------- ``` Signed-off-by: Don Brady <don.brady@intel.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #3795 Closes #2071
242 lines
7.6 KiB
Groff
242 lines
7.6 KiB
Groff
'\" t
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.\"
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.\" CDDL HEADER START
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.\"
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.\" The contents of this file are subject to the terms of the
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.\" Common Development and Distribution License (the "License").
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.\" You may not use this file except in compliance with the License.
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.\"
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.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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.\" or http://www.opensolaris.org/os/licensing.
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.\" See the License for the specific language governing permissions
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.\" and limitations under the License.
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.\"
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.\" When distributing Covered Code, include this CDDL HEADER in each
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.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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.\" If applicable, add the following below this CDDL HEADER, with the
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.\" fields enclosed by brackets "[]" replaced with your own identifying
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.\" information: Portions Copyright [yyyy] [name of copyright owner]
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.\"
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.\" CDDL HEADER END
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.\"
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.\"
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.\" Copyright 2013 Darik Horn <dajhorn@vanadac.com>. All rights reserved.
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.\"
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.\" Copyright (c) 2015, Intel Corporation.
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.\"
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.TH zpios 1 "2013 FEB 28" "ZFS on Linux" "User Commands"
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.SH NAME
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zpios \- Directly test the DMU.
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.SH SYNOPSIS
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.LP
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.BI "zpios [options] <\-p " pool ">"
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.SH DESCRIPTION
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This utility runs in-kernel DMU performance and stress tests that do
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not depend on the ZFS Posix Layer ("ZPL").
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.SH OPTIONS
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.HP
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.BI "\-t" " regex" ", \-\-threadcount" " regex"
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.IP
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Start this many threads for each test series, specified as a comma
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delimited regular expression. (eg: "-t 1,2,3")
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.IP
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This option is mutually exclusive with the \fBthreadcount_*\fR
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options.
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.HP
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.BI "\-l" " regex_low" ", \-\-threadcount_low" " regex_low"
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.HP
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.BI "\-h" " regex_high" ", \-\-threadcount_high" " regex_high"
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.HP
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.BI "\-e" " regex_incr" ", \-\-threadcount_incr" " regex_incr"
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.IP
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Start \fIregex_low\fR threads for the first test,
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add \fIregex_incr\fR threads for each subsequent test,
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and start \fIregex_high\fR threads for the last test.
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.IP
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These three options must be specified together and are mutually
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exclusive with the \fBthreadcount\fR option.
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.HP
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.BI "\-n" " regex" ", \-\-regioncount" " regex"
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.IP
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Create this many regions for each test series, specified as a comma
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delimited regular expression. (eg: "-n 512,4096,65536")
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.IP
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This option is mutually exclusive with the \fBregioncount_*\fR
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options.
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.HP
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.BI "\-i" " regex_low" ", \-\-regioncount_low" " regex_low"
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.HP
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.BI "\-j" " regex_high" ", \-\-regioncount_high" " regex_high"
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.HP
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.BI "\-k" " regex_incr" ", \-\-regioncount_incr" " regex_incr"
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.IP
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Create \fIregex_low\fR regions for the first test,
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add \fIregex_incr\fR regions for each subsequent test, and
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create \fIregex_high\fR regions for the last test.
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.IP
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These three options must be specified together and are mutually
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exclusive with the \fBregioncount\fR option.
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.HP
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.BI "\-o" " size" ", \-\-offset" " size"
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.IP
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Create regions at \fIsize\fR offset for each test series, specified as
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a comma delimited regular expression with an optional unit suffix.
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(eg: "-o 4M" means four megabytes.)
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.IP
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This option is mutually exclusive with the \fBoffset_*\fR options.
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.HP
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.BI "\-m" " size_low" ", \-\-offset_low" " size_low"
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.HP
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.BI "\-q" " size_high" ", \-\-offset_high" " size_high"
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.HP
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.BI "\-r" " size_incr" ", \-\-offset_incr" " size_incr"
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.IP
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Create a region at \fIsize_low\fR offset for the first test, add
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\fIsize_incr\fR to the offset for each subsequent test, and create
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a region at \fIsize_high\fR offset for the last test.
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.IP
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These three options must be specified together and are mutually
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exclusive with the \fBoffset\fR option.
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.HP
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.BI "\-c" " size" ", \-\-chunksize" " size"
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.IP
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Use \fIsize\fR chunks for each test, specified as a comma delimited
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regular expression with an optional unit suffix. (eg: "-c 1M" means
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one megabyte.) The chunk size must be at least the region size.
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.IP
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This option is mutually exclusive with the \fBchunksize_*\fB options.
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.HP
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.BI "\-a" " size_low" ", \-\-chunksize_low" " size_low"
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.HP
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.BI "\-b" " size_high" ", \-\-chunksize_high" " size_high"
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.HP
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.BI "\-g" " size_incr" ", \-\-chunksize_incr" " size_incr"
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.IP
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Use a \fIsize_low\fR chunk size for the first test, add \fIsize_incr\fR
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to the chunk size for each subsequent test, and use a \fIsize_high\fR
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chunk size for the last test.
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.IP
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These three options must be specified together and are mutually
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exclusive with the \fBchunksize\fR option.
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.HP
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.BI "\-s" " size" ", \-\-regionsize" " size"
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.IP
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Use \fIsize\fR regions for each test, specified as a comma delimited
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regular expression with an optional unit suffix. (eg: "-s 1M" means
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one megabyte.)
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.IP
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This option is mutually exclusive with the \fBregionsize_*\fB options.
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.HP
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.BI "\-A" " size_low" ", \-\-regionsize_low" " size_low"
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.HP
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.BI "\-B" " size_high" ", \-\-regionsize_high" " size_high"
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.HP
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.BI "\-C" " size_incr" ", \-\-regionsize_incr" " size_incr"
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.IP
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Use a \fIsize_low\fR region size for the first test, add \fIsize_incr\fR
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to the region size for each subsequent test, and use a \fIsize_high\fR
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region size for the last test.
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.IP
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These three options must be specified together and are mutually
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exclusive with the \fBregionsize\fR option.
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.HP
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.BI "\-S" " size | sizes" ", \-\-blocksize" " size | sizes"
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.IP
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Use \fIsize\fR ZFS blocks for each test, specified as a comma delimited
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regular expression with an optional unit suffix. (eg: "-S 1M" means
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one megabyte.) The supported range is powers of two from 128K through 16M.
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A range of blocks can be tested as follows: "-S 128K,256K,512K,1M".
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.IP
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.HP
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.BI "\-L" " dmu_flags" ", \-\-load" " dmu_flags"
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.IP
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Specify \fIdmuio\fR for regular DMU_IO, \fIssf\fR for single shared
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file access, or \fIfpp\fR for per thread access. Use commas to delimit
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multiple flags. (eg: "-L dmuio,ssf")
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.HP
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.BI "\-p" " name" ", \-\-pool" " name"
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.IP
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The pool name, which is mandatory.
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.HP
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.BI "\-M" " test" ", \-\-name" " test"
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.IP
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An arbitrary string that appears in the program output.
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.HP
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.BI "-x, \-\-cleanup"
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.IP
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Enable the DMU_REMOVE flag.
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.HP
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.BI "\-P" " command" ", \-\-prerun" " command"
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.IP
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Invoke \fIcommand\fR from the kernel before running the test. Shell
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expansion is not performed and the environment is set to
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HOME=/; TERM=linux; PATH=/sbin:/usr/sbin:/bin:/usr/bin.
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.HP
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.BI "\-R" " command" ", \-\-postrun" " command"
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.IP
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Invoke \fIcommand\fR from the kernel after running the test. Shell
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expansion is not performed and the environment is set to
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HOME=/; TERM=linux; PATH=/sbin:/usr/sbin:/bin:/usr/bin.
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.HP
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.BI "\-G" " directory" ", \-\-log" " directory"
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.IP
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Put logging output in this directory.
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.HP
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.BI "\-I" " size" ", \-\-regionnoise" " size"
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.IP
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Randomly vary the \fBregionsize\fR parameter for each test
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modulo \fIsize\fR bytes.
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.HP
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.BI "\-N" " size" ", \-\-chunknoise" " size"
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.IP
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Randomly vary the \fBchunksize\fR parameter for each test
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modulo \fIsize\fR bytes.
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.HP
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.BI "\-T" " time" ", \-\-threaddelay" " time"
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.IP
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Randomly vary the execution time for each test
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modulo \fItime\fR kernel jiffies.
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.HP
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.BI "\-V" "" ", \-\-verify" ""
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.IP
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Enable the DMU_VERIFY flag for trivial data verification.
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.HP
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.BI "\-z" "" ", \-\-zerocopy" ""
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.IP
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Enable the DMU_READ_ZC and DMU_WRITE_ZC flags, which are
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currently unimplemented for Linux.
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.IP
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.HP
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.BI "\-O" "" ", \-\-nowait" ""
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.IP
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Enable the DMU_WRITE_NOWAIT flag.
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.HP
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.BI "\-f" "" ", \-\-noprefetch" ""
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.IP
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Enable the DMU_READ_NOPF flag.
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.HP
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.BI "\-H" "" ", \-\-human\-readable" ""
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.IP
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Print PASS and FAIL results explicitly and put unit suffixes on large
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numbers.
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.HP
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.BI "\-v" "" ", \-\-verbose" ""
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.IP
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Increase output verbosity.
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.HP
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.BI "\-?" " " ", \-\-help" " "
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.IP
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Print the usage message.
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.SH "AUTHORS"
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The original zpios implementation was created by Cluster File Systems
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Inc and adapted to ZFS on Linux by Brian Behlendorf
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<behlendorf1@llnl.gov>.
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This man page was written by Darik Horn <dajhorn@vanadac.com>.
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.SH "SEE ALSO"
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.BR zpool (8),
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.BR zfs (8)
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