diff options
| author | DHE <[email protected]> | 2017-03-25 22:36:28 -0400 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2017-04-14 14:03:44 -0700 |
| commit | 06226b5936eefa16372cc370c584f4287bbc58c4 (patch) | |
| tree | 82049717ff9475c2f809cee1b48d68f6ee8def48 /module/zfs/vdev_queue.c | |
| parent | f6d4ce8e34e8b051ccc8823604b53b5b27ba6407 (diff) | |
Increase zfs_vdev_async_write_min_active to 2
Resilver operations frequently cause only a small amount of dirty data
to be written to disk at a time, resulting in the IO scheduler to only
issue 1 write at a time to the resilvering disk. When it is rotational
media the drive will often travel past the next sector to be written
before receiving a write command from ZFS, significantly delaying the
write of the next sector.
Raise zfs_vdev_async_write_min_active so that drives are kept fed
during resilvering.
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: DHE <[email protected]>
Issue #4825
Closes #5926
Diffstat (limited to 'module/zfs/vdev_queue.c')
| -rw-r--r-- | module/zfs/vdev_queue.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/module/zfs/vdev_queue.c b/module/zfs/vdev_queue.c index d969cfeed..2439f2951 100644 --- a/module/zfs/vdev_queue.c +++ b/module/zfs/vdev_queue.c @@ -148,7 +148,7 @@ uint32_t zfs_vdev_sync_write_min_active = 10; uint32_t zfs_vdev_sync_write_max_active = 10; uint32_t zfs_vdev_async_read_min_active = 1; uint32_t zfs_vdev_async_read_max_active = 3; -uint32_t zfs_vdev_async_write_min_active = 1; +uint32_t zfs_vdev_async_write_min_active = 2; uint32_t zfs_vdev_async_write_max_active = 10; uint32_t zfs_vdev_scrub_min_active = 1; uint32_t zfs_vdev_scrub_max_active = 2; |