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Alexander Motin ea400129c3
More aggsum optimizations
- Avoid atomic_add() when updating as_lower_bound/as_upper_bound.
Previous code was excessively strong on 64bit systems while not
strong enough on 32bit ones.  Instead introduce and use real
atomic_load() and atomic_store() operations, just an assignments
on 64bit machines, but using proper atomics on 32bit ones to avoid
torn reads/writes.

 - Reduce number of buckets on large systems.  Extra buckets not as
much improve add speed, as hurt reads.  Unlike wmsum for aggsum
reads are still important.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Sponsored-By: iXsystems, Inc.
Closes #12145
2021-06-07 09:02:47 -07:00
.github Don't direct to freenode in issue template 2021-05-28 15:08:41 -06:00
cmd libzfs: convert to -fvisibility=hidden 2021-06-03 13:17:55 -07:00
config libzfs: convert to -fvisibility=hidden 2021-06-03 13:17:55 -07:00
contrib i-t: don't try to import from empty cache 2021-06-04 14:01:08 -07:00
etc Turn shellcheck into a normal make target. Fix new files it caught 2021-06-01 11:38:49 -07:00
include More aggsum optimizations 2021-06-07 09:02:47 -07:00
lib More aggsum optimizations 2021-06-07 09:02:47 -07:00
man Lint most manpages 2021-06-04 12:48:31 -07:00
module More aggsum optimizations 2021-06-07 09:02:47 -07:00
rpm RPM: Explicitly set the required min/max kernel version for the DKMS package 2021-05-27 23:06:45 -07:00
scripts mancheck: accept lints, accept lint overrides 2021-06-04 12:48:26 -07:00
tests Quick fixes for two ZTS failures 2021-06-01 15:34:19 -06:00
udev udev/rules.d: .gitignore: glob all rules 2021-06-01 11:38:45 -07:00
.editorconfig Add an .editorconfig; document git whitespace settings 2020-01-27 13:32:52 -08:00
.gitignore Add FreeBSD support to OpenZFS 2020-04-14 11:36:28 -07:00
.gitmodules .gitmodules: link to openzfs github repository 2021-04-12 09:37:23 -07:00
AUTHORS Add zstd support to zfs 2020-08-20 10:30:06 -07:00
autogen.sh Cause autogen.sh to fail if autoreconf fails 2018-07-06 09:27:37 -07:00
CODE_OF_CONDUCT.md Replace ZFS on Linux references with OpenZFS 2020-10-08 20:10:13 -07:00
configure.ac zstreamdump: replace with link to zstream 2021-05-21 10:16:14 -07:00
copy-builtin copy-builtin: posix conformance 2021-05-08 08:58:26 -07:00
COPYRIGHT Fix typos 2020-06-09 21:24:09 -07:00
LICENSE Update build system and packaging 2018-05-29 16:00:33 -07:00
Makefile.am mancheck: accept lints, accept lint overrides 2021-06-04 12:48:26 -07:00
META Update META 2021-03-30 10:50:55 -07:00
NEWS Fix NEWS file 2020-08-26 21:44:41 -07:00
NOTICE Update build system and packaging 2018-05-29 16:00:33 -07:00
README.md Update FreeBSD versions 2021-03-16 15:03:28 -07:00
RELEASES.md Add RELEASES.md file 2021-04-02 16:33:40 -07:00
TEST Remove CI builder customization from TEST 2020-03-16 10:46:03 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

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OpenZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community. This repository contains the code for running OpenZFS on Linux and FreeBSD.

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Official Resources

Installation

Full documentation for installing OpenZFS on your favorite operating system can be found at the Getting Started Page.

Contribute & Develop

We have a separate document with contribution guidelines.

We have a Code of Conduct.

Release

OpenZFS is released under a CDDL license. For more details see the NOTICE, LICENSE and COPYRIGHT files; UCRL-CODE-235197

Supported Kernels

  • The META file contains the officially recognized supported Linux kernel versions.
  • Supported FreeBSD versions are any supported branches and releases starting from 12.2-RELEASE.