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vdev: expose zfs_vdev_def_queue_depth as a module parameter 

It was previously available only to FreeBSD.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Sponsored-by: Klara, Inc.
Sponsored-by: Seagate Technology LLC
Closes #14718
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Rob N 2023-04-07 03:31:19 +10:00 committed by GitHub
parent b66c2a0899
commit ece7ab7e7d
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3 changed files with 8 additions and 8 deletions
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5
man/man4/zfs.4
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@ -1292,6 +1292,11 @@ as fuller devices will tend to be slower than empty devices.
Also see
.Sy zio_dva_throttle_enabled .
.
.It Sy zfs_vdev_def_queue_depth Ns = Ns Sy 32 Pq uint
Default queue depth for each vdev IO allocator.
Higher values allow for better coalescing of sequential writes before sending
them to the disk, but can increase transaction commit times.
.
.It Sy zfs_vdev_failfast_mask Ns = Ns Sy 1 Pq uint
Defines if the driver should retire on a given error type.
The following options may be bitwise-ored together:

8
module/os/freebsd/zfs/sysctl_os.c
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@ -887,14 +887,6 @@ SYSCTL_UINT(_vfs_zfs, OID_AUTO, top_maxinflight,
" (LEGACY)");
/* END CSTYLED */
extern uint_t zfs_vdev_def_queue_depth;
/* BEGIN CSTYLED */
SYSCTL_UINT(_vfs_zfs_vdev, OID_AUTO, def_queue_depth,
CTLFLAG_RWTUN, &zfs_vdev_def_queue_depth, 0,
"Default queue depth for each allocator");
/* END CSTYLED */
/* zio.c */
/* BEGIN CSTYLED */

3
module/zfs/vdev_queue.c
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@ -1119,3 +1119,6 @@ ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, nia_delay, UINT, ZMOD_RW,
ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, queue_depth_pct, UINT, ZMOD_RW,
"Queue depth percentage for each top-level vdev");
ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, def_queue_depth, UINT, ZMOD_RW,
"Default queue depth for each allocator");