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46d6f1fe56
Postponing entry removal from the DDT log in case of hit till later single-threaded sync stage allows to make ddl_tree stable during multi-threaded ZIO processing stage. It allows to drop the DDT lock before the search instead of after, reducing the contention a lot. Actually ddt_log_update_entry() was already handling the case of entry present in the active log, so we only need to remove it from flushing log, if the entry happen to be there. My tests with parallel 4KB block writes show throughput increase from 480MB/s (122K blocks/s) to 827MB/s (212K blocks/s), even though still limited by the global DDT lock contention. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <alexander.motin@TrueNAS.com> Closes #18044 |
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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.