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It does not look important how exactly brt_pending_tree is sorted. When cloning large file, it is quite likely that all of its blocks have identical physical birth times, so comparing them first does not provide useful entropy, while accesses additional cache line. In most cases combination of vdev and offset provides unique result and physical birth time comparison is not even needed. Meanwhile, when traversing the tree inside brt_pending_apply(), it can be beneficial for dbuf cache and CPU cache hits to group processing by vdev and so by the per-VDEV BRT ZAPs. Reviewed-by: Rob Norris <robn@despairlabs.com> Reviewed-by: Brian Atkinson <batkinson@lanl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #15954 |
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| zfs.release.in | ||
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 12.4-RELEASE.