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Alexander Motin
6482a27e81
For each block written or freed ZFS dirties ds_dbuf of the dataset. While dbuf_dirty() has a fast path for already dirty dbufs, it still require taking the lock and doing some things visible in profiler. Investigation shown ds_dbuf dirtying by dsl_dataset_block_born() and some of dsl_dataset_block_kill() are just not needed, since by the time they are called in sync context the ds_dbuf is already dirtied by dsl_dataset_sync(). Tests show this reducing large file deletion time by ~3% by saving CPU time of single-threaded part of the sync thread. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <alexander.motin@TrueNAS.com> Closes #18028
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.