7acd62b609
This avoids taking the lock in the common case. This almost halves contention on z_hold_mtx as it avoids extending its hold time by not contending on sa_lock. Performance does not improve because contention shifts to other global-ish locks. Before: 108608922 (sx:zfsvfs->z_hold_mtx[i]) 15464416 (sleep mutex:vnode_list) 12455346 (sx:os->os_lock) 10792604 (sx:sa->sa_lock) 3888049 (sx:zfsvfs->z_znodes_lock) 2863341 (sleep mutex:struct mount mtx) 835414 (sx:dn->dn_mtx) After: 57594050 (sx:zfsvfs->z_hold_mtx[i]) 22089617 (sleep mutex:vnode_list) 12148265 (sx:zfsvfs->z_znodes_lock) 9537666 (sx:os->os_lock) 6833254 (sleep mutex:struct mount mtx) 1131875 (sx:sa->sa_lock) 437455 (sx:dn->dn_mtx) Signed-off-by: Mateusz Guzik <mjguzik@gmail.com> |
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| .github | ||
| cmd | ||
| config | ||
| contrib | ||
| etc | ||
| include | ||
| lib | ||
| man | ||
| module | ||
| rpm | ||
| scripts | ||
| tests | ||
| udev | ||
| .cirrus.yml | ||
| .editorconfig | ||
| .gitignore | ||
| .gitmodules | ||
| .mailmap | ||
| AUTHORS | ||
| CODE_OF_CONDUCT.md | ||
| COPYRIGHT | ||
| LICENSE | ||
| META | ||
| Makefile.am | ||
| NEWS | ||
| NOTICE | ||
| README.md | ||
| RELEASES.md | ||
| TEST | ||
| autogen.sh | ||
| configure.ac | ||
| copy-builtin | ||
| zfs.release.in | ||
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.