Alexander Motin e76373de7b More aggsum optimizations
- Avoid atomic_add() when updating as_lower_bound/as_upper_bound.
Previous code was excessively strong on 64bit systems while not
strong enough on 32bit ones.  Instead introduce and use real
atomic_load() and atomic_store() operations, just an assignments
on 64bit machines, but using proper atomics on 32bit ones to avoid
torn reads/writes.

 - Reduce number of buckets on large systems.  Extra buckets not as
much improve add speed, as hurt reads.  Unlike wmsum for aggsum
reads are still important.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Sponsored-By: iXsystems, Inc.
Closes #12145
2021-06-09 13:05:34 -07:00
2021-06-09 13:05:34 -07:00
2021-06-09 13:05:34 -07:00
2021-06-09 13:05:34 -07:00
2021-06-09 13:05:34 -07:00
2021-06-09 13:05:34 -07:00
2020-04-14 11:36:28 -07:00
2020-08-20 10:30:06 -07:00
2021-05-10 12:18:54 -07:00
2020-06-09 21:24:09 -07:00
2018-05-29 16:00:33 -07:00
2021-05-28 09:01:47 -07:00
2020-08-26 21:44:41 -07:00
2018-05-29 16:00:33 -07:00
2021-03-16 15:03:28 -07:00
2021-04-07 13:26:58 -07:00
2020-03-16 10:46:03 -07:00

img

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.

codecov coverity

Official Resources

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 META file contains the officially recognized supported Linux kernel versions.
  • Supported FreeBSD versions are any supported branches and releases starting from 12.2-RELEASE.
S
Description
No description provided
Readme 122 MiB
Languages
C 70.2%
Shell 19.9%
Assembly 5.1%
M4 1.9%
Python 1.6%
Other 1.3%