Paul Dagnelie df55ba7c49 Detect a slow raidz child during reads ... A single slow responding disk can affect the overall read performance of a raidz group. When a raidz child disk is determined to be a persistent slow outlier, then have it sit out during reads for a period of time. The raidz group can use parity to reconstruct the data that was skipped. Each time a slow disk is placed into a sit out period, its `vdev_stat.vs_slow_ios count` is incremented and a zevent class `ereport.fs.zfs.delay` is posted. The length of the sit out period can be changed using the `raid_read_sit_out_secs` module parameter. Setting it to zero disables slow outlier detection. Sponsored-by: Klara, Inc. Sponsored-by: Wasabi Technology, Inc. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Paul Dagnelie <paul.dagnelie@klarasystems.com> Contributions-by: Don Brady <don.brady@klarasystems.com> Contributions-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #17227		2025-09-10 15:31:30 -07:00
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ia32	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
acl_impl.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
acl.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
atomic.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
byteorder.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
callb.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
ccompat.h	freebsd: Use compiler.h from FreeBSD's base's linuxkpi	2024-10-16 13:00:40 -04:00
ccompile.h	tunables: remove FreeBSD compat macros for Linux module params	2025-05-28 16:50:22 -07:00
cmn_err.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
condvar.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
cred.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
ctype.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
debug.h	ZIL: allow zil_commit() to fail with error	2025-08-08 16:43:09 -07:00
dirent.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
disp.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
fcntl.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
file.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
freebsd_rwlock.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
idmap.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
inttypes.h	Add FreeBSD support to OpenZFS	2020-04-14 11:36:28 -07:00
isa_defs.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
kmem_cache.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
kmem.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
kstat.h	SPDX: license tags: GPL-2.0-or-later	2025-03-13 17:57:09 -07:00
list_impl.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
list.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
lock.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
misc.h	Skip dbuf_evict_one() from dbuf_evict_notify() for reclaim thread	2025-08-01 16:47:41 -07:00
mod.h	mod.h: make consistent across all three platforms	2025-07-15 15:46:14 -07:00
mode.h	Add FreeBSD support to OpenZFS	2020-04-14 11:36:28 -07:00
mount.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
mutex.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
param.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
policy.h	cred: properly pass and test creds on other threads (#17273)	2025-04-29 16:27:48 -07:00
proc.h	Prefer VERIFY0P(n) over VERIFY(n == NULL)	2025-08-07 11:41:37 -07:00
processor.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
procfs_list.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
random.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
rwlock.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
sdt.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
sid.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
sig.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
simd_aarch64.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
simd_arm.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
simd_powerpc.h	simd_powerpc.h: enable FPU on FreeBSD	2025-04-01 09:18:38 -04:00
simd_x86.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
simd.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
spl_condvar.h	FreeBSD: Reduce divergence from in-tree sources	2023-10-09 13:27:18 -07:00
string.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
sunddi.h	SPDX: license tags: GPL-2.0-or-later	2025-03-13 17:57:09 -07:00
sysmacros.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
systeminfo.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
systm.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
taskq.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
thread.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
time.h	Detect a slow raidz child during reads	2025-09-10 15:31:30 -07:00
timer.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
trace_zfs.h	Add FreeBSD support to OpenZFS	2020-04-14 11:36:28 -07:00
trace.h	Add FreeBSD support to OpenZFS	2020-04-14 11:36:28 -07:00
types32.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
types.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
uio.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
uuid.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
vfs.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
vm.h	FreeBSD: zfs_putpages: don't undirty pages until after write completes	2025-07-15 15:58:15 -07:00
vmsystm.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
vnode_impl.h	Add support for FreeBSD's Solaris style extended attribute interface	2025-07-30 09:49:43 -07:00
vnode.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00
wmsum.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zmod.h	SPDX: license tags: CDDL-1.0	2025-03-13 17:56:27 -07:00
zone.h	SPDX: license tags: BSD-2-Clause	2025-03-13 17:56:46 -07:00