887a3c533b
Current L2ARC write rate and headroom parameters are very conservative: l2arc_write_max=8M and l2arc_headroom=2 (ie: a full L2ARC writes at 8 MB/s, scanning 16/32 MB of ARC tail each time; a warming L2ARC runs at 2x these rates). These values were selected 15+ years ago based on then-current SSDs size, performance and endurance. Today we have multi-TB, fast and cheap SSDs which can sustain much higher read/write rates. For this reason, this patch increases l2arc_write_max to 32M and l2arc_headroom to 8 (4x increase for both). Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Signed-off-by: Gionatan Danti <g.danti@assyoma.it> Closes #15457 |
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README.md
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 12.2-RELEASE.