mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2026-01-14 17:22:05 +03:00
a41ef36858
Before this change DDT lock was taken 4 times per written block, and as effectively a pool-wide lock it can be highly congested. This change introduces a new per-entry dde_io_lock, protecting some fields during I/O ready and done stages, so that we don't need the global lock there. According to my write tests on 64-thread system with 4KB blocks this significantly reduce the global lock contention, reducing CPU usage from 100% to expected ~80%, and increasing write throughput by 10%. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Rob Norris <robn@despairlabs.com> Signed-off-by: Alexander Motin <alexander.motin@TrueNAS.com> Closes #17960 |
||
|---|---|---|
| .. | ||
| os | ||
| sys | ||
| .gitignore | ||
| cityhash.h | ||
| libnvpair.h | ||
| libuutil_common.h | ||
| libuutil_impl.h | ||
| libuutil.h | ||
| libzdb.h | ||
| libzfs_core.h | ||
| libzfs.h | ||
| libzfsbootenv.h | ||
| libzutil.h | ||
| Makefile.am | ||
| thread_pool.h | ||
| zfeature_common.h | ||
| zfs_comutil.h | ||
| zfs_crrd.h | ||
| zfs_deleg.h | ||
| zfs_fletcher.h | ||
| zfs_namecheck.h | ||
| zfs_prop.h | ||
| zfs_valstr.h | ||