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Alexander Motin 44e6a07bff ZIO: Set minimum number of free issue threads to 32
Free issue threads might block waiting for synchronous DDT, BRT or
GANG header reads. So unlike other taskqs using ZTI_SCALE to scale
with number of CPUs, here we also need some amount of threads to
potentially saturate pool reads.  I am not sure we always want the
96 threads we had before ZTI_SCALE introduction at #11966 on small
systems, but lets make it at least 32.

While here, make free taskqs configurable, similar to read and
write ones.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Rob Norris <robn@despairlabs.com>
Signed-off-by: Alexander Motin <alexander.motin@TrueNAS.com>
Closes #17903
2025-12-19 19:55:14 -08:00
.github CI: Use Ubuntu mirrors instead of azure (#18057) 2025-12-19 19:55:14 -08:00
cmd Explicit set ashift for non-leaf vdevs 2025-12-19 19:55:14 -08:00
config config/kmap_atomic: initialise test data 2025-12-17 11:24:44 -08:00
contrib contrib/initramfs/scripts/zfs: shellcheck fixup 2025-10-21 11:02:42 -07:00
etc docs: fix a few small typos (#17804) 2025-10-21 10:35:58 -07:00
include ZIO: Set minimum number of free issue threads to 32 2025-12-19 19:55:14 -08:00
lib Suppress some ashift warnings 2025-12-19 19:55:14 -08:00
man ZIO: Set minimum number of free issue threads to 32 2025-12-19 19:55:14 -08:00
module ZIO: Set minimum number of free issue threads to 32 2025-12-19 19:55:14 -08:00
rpm Add templated zfs-mount@.service 2025-08-19 10:30:04 -07:00
scripts CI: exclude signed-off-by/reviewed-by from 72 char limit 2025-12-19 19:55:14 -08:00
tests ZFS: Enable more logs for raidz_001_neg 2025-12-19 19:55:14 -08:00
udev zvol_id: make array length properly known at compile time 2025-12-17 11:24:44 -08:00
.editorconfig Add an .editorconfig; document git whitespace settings 2020-01-27 13:32:52 -08:00
.gitignore Packaging: Auto-generate changelog during configure (#15528) 2023-11-16 08:58:47 -08:00
.gitmodules .gitmodules: link to openzfs github repository 2021-04-12 09:37:23 -07:00
.mailmap AUTHORS/mailmap: update with new contributors 2025-05-28 16:00:28 -07:00
AUTHORS AUTHORS/mailmap: update with new contributors 2025-05-28 16:00:28 -07:00
autogen.sh Ubuntu 22.04 integration: ShellCheck 2022-11-18 11:24:48 -08:00
CODE_OF_CONDUCT.md Documentation corrections 2022-12-22 11:34:28 -08:00
configure.ac Linux build: handle CONFIG_OBJTOOL_WERROR=y 2025-08-07 13:10:33 -04:00
copy-builtin copy-builtin: add hooks with sed/>> 2022-05-10 10:17:43 -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 spdxcheck: program to check SPDX license tags 2025-04-16 09:59:45 -07:00
META Linux 6.18: META 2025-12-17 11:24:44 -08:00
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 FreeBSD: remove support for FreeBSD < 13.0-RELEASE (#16372) 2024-08-05 16:56:45 -07:00
RELEASES.md Update RELEASES.md LTS release to 2.2 2025-02-25 22:27:10 +05:00
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 13.0-RELEASE.