diff options
| author | Mateusz Guzik <[email protected]> | 2022-09-28 02:38:03 +0200 |
|---|---|---|
| committer | GitHub <[email protected]> | 2022-09-27 17:38:03 -0700 |
| commit | eb9bec0a5d19abf9404f52081424fbb814e6188a (patch) | |
| tree | a7287597be09c325fc20aa474a167c2cc1a5acbe /man | |
| parent | af65073a075b162ccf6e3dd8fb925f29d5743ca3 (diff) | |
Bring per_txg_dirty_frees_percent back to 30
The current value causes significant artificial slowdown during mass
parallel file removal, which can be observed both on FreeBSD and Linux
when running real workloads.
Sample results from Linux doing make -j 96 clean after an allyesconfig
modules build:
before: 4.14s user 6.79s system 48% cpu 22.631 total
after: 4.17s user 6.44s system 153% cpu 6.927 total
FreeBSD results in the ticket.
Reviewed-by: Alexander Motin <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: Richard Yao <[email protected]>
Reviewed-by: George Melikov <[email protected]>
Signed-off-by: Mateusz Guzik <[email protected]>
Closes #13932
Closes #13938
Diffstat (limited to 'man')
| -rw-r--r-- | man/man4/zfs.4 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/man/man4/zfs.4 b/man/man4/zfs.4 index adb00f1c8..da1aa9c34 100644 --- a/man/man4/zfs.4 +++ b/man/man4/zfs.4 @@ -1677,7 +1677,7 @@ prefetched during a pool traversal, like .Nm zfs Cm send or other data crawling operations. . -.It Sy zfs_per_txg_dirty_frees_percent Ns = Ns Sy 5 Ns % Pq ulong +.It Sy zfs_per_txg_dirty_frees_percent Ns = Ns Sy 30 Ns % Pq ulong Control percentage of dirtied indirect blocks from frees allowed into one TXG. After this threshold is crossed, additional frees will wait until the next TXG. .Sy 0 No disables this throttle. |