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On systems with enormous amounts of memory, the single arc_evict thread can become a bottleneck if reads and writes are stuck behind it, waiting for old data to be evicted before new data can take its place. This commit adds support for evicting from multiple ARC lists in parallel, by farming the evict work out to some number of threads and then accumulating their results. A new tuneable, zfs_arc_evict_threads, sets the number of threads. By default, it will scale based on the number of CPUs. Sponsored-by: Expensify, Inc. Sponsored-by: Klara, Inc. Reviewed-by: Alexander Motin <mav@FreeBSD.org> Reviewed-by: Youzhong Yang <youzhong@gmail.com> Signed-off-by: Allan Jude <allan@klarasystems.com> Signed-off-by: Mateusz Piotrowski <mateusz.piotrowski@klarasystems.com> Signed-off-by: Alexander Stetsenko <alex.stetsenko@klarasystems.com> Signed-off-by: Rob Norris <rob.norris@klarasystems.com> Co-authored-by: Rob Norris <rob.norris@klarasystems.com> Co-authored-by: Mateusz Piotrowski <mateusz.piotrowski@klarasystems.com> Co-authored-by: Alexander Stetsenko <alex.stetsenko@klarasystems.com> Closes #16486 |
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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.
Official Resources
- Documentation - for using and developing this repo
- ZoL Site - Linux release info & links
- Mailing lists
- OpenZFS site - for conference videos and info on other platforms (illumos, OSX, Windows, etc)
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
METAfile contains the officially recognized supported Linux kernel versions. - Supported FreeBSD versions are any supported branches and releases starting from 13.0-RELEASE.