Author: mav
Date: Thu Mar 5 19:43:43 2020
New Revision: 358683
URL: https://svnweb.freebsd.org/changeset/base/358683
Log:
Remove vfs.zfs.top_maxinflight tunable/sysctl.
It is dead since sorted scrub import at r334844.
MFC after: 1 week
Sponsored by: iXsystems, Inc.
Modified:
head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_scan.c
Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_scan.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_scan.c Thu Mar
5 18:11:47 2020 (r358682)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_scan.c Thu Mar
5 19:43:43 2020 (r358683)
@@ -137,12 +137,6 @@ extern int zfs_vdev_async_write_active_min_dirty_perce
*/
int zfs_scan_strict_mem_lim = B_FALSE;
-/*
- * Maximum number of parallelly executing I/Os per top-level vdev.
- * Tune with care. Very high settings (hundreds) are known to trigger
- * some firmware bugs and resets on certain SSDs.
- */
-int zfs_top_maxinflight = 32; /* maximum I/Os per top-level */
unsigned int zfs_resilver_delay = 2; /* number of ticks to delay resilver --
2 is a good number */
unsigned int zfs_scrub_delay = 4; /* number of ticks to delay scrub -- 4
is a good number */
unsigned int zfs_scan_idle = 50; /* idle window in clock ticks */
@@ -186,8 +180,6 @@ boolean_t zfs_no_scrub_io = B_FALSE; /* set to disable
boolean_t zfs_no_scrub_prefetch = B_FALSE; /* set to disable scrub prefetch */
SYSCTL_DECL(_vfs_zfs);
-SYSCTL_UINT(_vfs_zfs, OID_AUTO, top_maxinflight, CTLFLAG_RWTUN,
- &zfs_top_maxinflight, 0, "Maximum I/Os per top-level vdev");
SYSCTL_UINT(_vfs_zfs, OID_AUTO, resilver_delay, CTLFLAG_RWTUN,
&zfs_resilver_delay, 0, "Number of ticks to delay resilver");
SYSCTL_UINT(_vfs_zfs, OID_AUTO, scrub_delay, CTLFLAG_RWTUN,
@@ -1538,7 +1530,6 @@ dsl_scan_prefetch_thread(void *arg)
dsl_scan_t *scn = arg;
spa_t *spa = scn->scn_dp->dp_spa;
vdev_t *rvd = spa->spa_root_vdev;
- uint64_t maxinflight = rvd->vdev_children * zfs_top_maxinflight;
scan_prefetch_issue_ctx_t *spic;
/* loop until we are told to stop */
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