Alexander Motin dc5c8006f6 Prefetch on deadlists merge ... During snapshot deletion ZFS may issue several reads for each deadlist to merge them into next snapshot's or pool's bpobj. Number of the dead lists increases with number of snapshots. On HDD pools it may take significant time during which sync thread is blocked. This patch introduces prescient prefetch of required blocks for up to 128 deadlists ahead. Tests show reduction of time required to delete dataset with 720 snapshots with randomly overwritten file on wide HDD pool from 75-85 to 22-28 seconds. Reviewed-by: Allan Jude <allan@klarasystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Issue #14276 Closes #14402		2023-01-25 11:30:24 -08:00
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abd.c	abd_return_buf() should call zfs_refcount_remove_many() early	2022-10-19 17:11:01 -07:00
aggsum.c	Remove bcopy(), bzero(), bcmp()	2022-03-15 15:13:42 -07:00
arc.c	Cleanup: Use NULL when doing NULL pointer comparisons	2023-01-12 16:00:37 -08:00
blake3_zfs.c	Cleanup: Use NULL when doing NULL pointer comparisons	2023-01-12 16:00:37 -08:00
blkptr.c	Remove bcopy(), bzero(), bcmp()	2022-03-15 15:13:42 -07:00
bplist.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
bpobj.c	Prefetch on deadlists merge	2023-01-25 11:30:24 -08:00
bptree.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
bqueue.c	Batch enqueue/dequeue for bqueue	2023-01-10 13:39:22 -08:00
btree.c	Optimize microzaps	2022-10-20 11:57:15 -07:00
dataset_kstats.c	Introduce kmem_scnprintf()	2022-10-29 13:05:11 -07:00
dbuf_stats.c	Revert "Reduce dbuf_find() lock contention"	2022-09-22 12:59:41 -07:00
dbuf.c	Implement uncached prefetch	2023-01-04 17:29:54 -07:00
ddt_zap.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
ddt.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
dmu_diff.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
dmu_object.c	Cleanup: Specify unsignedness on things that should not be signed	2022-09-27 16:42:41 -07:00
dmu_objset.c	Activate filesystem features only in syncing context	2023-01-11 18:00:39 -08:00
dmu_recv.c	Wait for txg sync if the last DRR_FREEOBJECTS might result in a hole	2023-01-23 13:19:43 -08:00
dmu_redact.c	Fix incorrect size given to bqueue_enqueue() call in dmu_redact.c	2022-09-15 16:21:21 -07:00
dmu_send.c	Cleanup: Use MIN() macro	2023-01-12 16:00:23 -08:00
dmu_traverse.c	arc_read()/arc_access() refactoring and cleanup	2022-12-22 12:10:24 -08:00
dmu_tx.c	Add tunable to allow changing micro ZAP's max size	2023-01-10 13:41:54 -08:00
dmu_zfetch.c	arc_read()/arc_access() refactoring and cleanup	2022-12-22 12:10:24 -08:00
dmu.c	Implement uncached prefetch	2023-01-04 17:29:54 -07:00
dnode_sync.c	free_blocks(): Fix reports from 2016 PVS Studio FreeBSD report	2023-01-23 13:12:37 -08:00
dnode.c	Turn default_bs and default_ibs into ZFS_MODULE_PARAMs	2023-01-11 09:38:20 -08:00
dsl_bookmark.c	Cleanup: Address Clang's static analyzer's unused code complaints	2022-10-14 13:37:54 -07:00
dsl_crypt.c	Handle and detect #13709's unlock regression (#14161)	2022-11-15 14:44:12 -08:00
dsl_dataset.c	Activate filesystem features only in syncing context	2023-01-11 18:00:39 -08:00
dsl_deadlist.c	Prefetch on deadlists merge	2023-01-25 11:30:24 -08:00
dsl_deleg.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
dsl_destroy.c	Prevent zevent list from consuming all of kernel memory	2022-08-22 12:36:22 -07:00
dsl_dir.c	Cleanup ->dd_space_towrite should be unsigned	2023-01-20 11:10:15 -08:00
dsl_pool.c	Cleanup: Address Clang's static analyzer's unused code complaints	2022-10-14 13:37:54 -07:00
dsl_prop.c	Micro-optimize dsl_prop_get_dd()	2023-01-20 11:01:41 -08:00
dsl_scan.c	Improve resilver ETAs	2023-01-25 11:28:54 -08:00
dsl_synctask.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
dsl_userhold.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
edonr_zfs.c	Remove bcopy(), bzero(), bcmp()	2022-03-15 15:13:42 -07:00
fm.c	Cleanup of dead code suggested by Clang Static Analyzer (#14380)	2023-01-17 09:57:12 -08:00
gzip.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
hkdf.c	Remove bcopy(), bzero(), bcmp()	2022-03-15 15:13:42 -07:00
lz4_zfs.c	Updated the lz4 decompressor	2022-01-07 10:36:49 -08:00
lz4.c	lz4: Cherrypick fix for CVE-2021-3520	2022-01-12 16:14:36 -08:00
lzjb.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
metaslab.c	Bypass metaslab throttle for removal allocations	2022-12-09 10:48:33 -08:00
mmp.c	Cleanup: Address Clang's static analyzer's unused code complaints	2022-10-14 13:37:54 -07:00
multilist.c	Cleanup: Specify unsignedness on things that should not be signed	2022-09-27 16:42:41 -07:00
objlist.c	Implement Redacted Send/Receive	2019-06-19 09:48:12 -07:00
pathname.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
range_tree.c	Add defensive assertions	2022-10-12 11:25:18 -07:00
refcount.c	Cleanup: Specify unsignedness on things that should not be signed	2022-09-27 16:42:41 -07:00
rrwlock.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
sa.c	Fix double const qualifier declarations	2022-09-30 15:34:39 -07:00
sha256.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
skein_zfs.c	Remove bcopy(), bzero(), bcmp()	2022-03-15 15:13:42 -07:00
spa_checkpoint.c	Cleanup: 64-bit kernel module parameters should use fixed width types	2022-10-13 10:03:29 -07:00
spa_config.c	zed: add hotplug support for spare vdevs	2023-01-09 12:43:03 -08:00
spa_errlog.c	deadlock between spa_errlog_lock and dp_config_rwlock	2022-12-22 11:48:49 -08:00
spa_history.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
spa_log_spacemap.c	Address warnings about possible division by zero from clangsa	2022-11-03 09:58:14 -07:00
spa_misc.c	Improve resilver ETAs	2023-01-25 11:28:54 -08:00
spa_stats.c	Cleanup: Specify unsignedness on things that should not be signed	2022-09-27 16:42:41 -07:00
spa.c	deadlock between spa_errlog_lock and dp_config_rwlock	2022-12-22 11:48:49 -08:00
space_map.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
space_reftree.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
THIRDPARTYLICENSE.cityhash	OpenZFS 8484 - Implement aggregate sum and use for arc counters	2018-06-06 09:35:59 -07:00
THIRDPARTYLICENSE.cityhash.descrip	OpenZFS 8484 - Implement aggregate sum and use for arc counters	2018-06-06 09:35:59 -07:00
txg.c	Fix the last two CFI callback prototype mismatches	2022-11-29 09:56:16 -08:00
uberblock.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
unique.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
vdev_cache.c	Cleanup: Specify unsignedness on things that should not be signed	2022-09-27 16:42:41 -07:00
vdev_draid_rand.c	Distributed Spare (dRAID) Feature	2020-11-13 13:51:51 -08:00
vdev_draid.c	vdev_draid_lookup_map() should not iterate outside draid_maps	2022-09-12 12:51:17 -07:00
vdev_indirect_births.c	Remove bcopy(), bzero(), bcmp()	2022-03-15 15:13:42 -07:00
vdev_indirect_mapping.c	Remove bcopy(), bzero(), bcmp()	2022-03-15 15:13:42 -07:00
vdev_indirect.c	Cleanup: Replace oldstyle struct hack with C99 flexible array members	2023-01-12 16:00:03 -08:00
vdev_initialize.c	Cleanup: 64-bit kernel module parameters should use fixed width types	2022-10-13 10:03:29 -07:00
vdev_label.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
vdev_mirror.c	Improve too large physical ashift handling	2022-09-08 10:30:53 -07:00
vdev_missing.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
vdev_queue.c	Convert enum zio_flag to uint64_t	2022-10-27 09:54:54 -07:00
vdev_raidz_math_aarch64_neon_common.h	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
vdev_raidz_math_aarch64_neon.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
vdev_raidz_math_aarch64_neonx2.c	Fix Clang 15 compilation errors	2022-11-30 13:46:26 -08:00
vdev_raidz_math_avx2.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
vdev_raidz_math_avx512bw.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
vdev_raidz_math_avx512f.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
vdev_raidz_math_impl.h	Cleanup Raid-Z Typo fixes	2022-09-06 09:43:21 -07:00
vdev_raidz_math_powerpc_altivec_common.h	Linux ppc64le ieee128 compat: Do not redefine __asm on external headers	2023-01-13 10:58:58 -08:00
vdev_raidz_math_powerpc_altivec.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
vdev_raidz_math_scalar.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
vdev_raidz_math_sse2.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
vdev_raidz_math_ssse3.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
vdev_raidz_math.c	Convert some sprintf() calls to kmem_scnprintf()	2022-11-28 13:49:58 -08:00
vdev_raidz.c	Bump checksum error counter before reporting to ZED	2022-12-02 17:42:22 -08:00
vdev_rebuild.c	Fix sequential resilver drive failure race condition	2022-10-19 15:48:13 -07:00
vdev_removal.c	Bypass metaslab throttle for removal allocations	2022-12-09 10:48:33 -08:00
vdev_root.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
vdev_trim.c	Propagate extent_bytes change to autotrim thread	2022-10-28 10:16:31 -07:00
vdev.c	Configure zed's diagnosis engine with vdev properties	2023-01-23 13:14:25 -08:00
zap_leaf.c	Optimize microzaps	2022-10-20 11:57:15 -07:00
zap_micro.c	Add tunable to allow changing micro ZAP's max size	2023-01-10 13:41:54 -08:00
zap.c	Cleanup: Use NULL when doing NULL pointer comparisons	2023-01-12 16:00:37 -08:00
zcp_get.c	Cleanup: Address Clang's static analyzer's unused code complaints	2022-10-14 13:37:54 -07:00
zcp_global.c	OpenZFS 8600 - ZFS channel programs - snapshot	2018-02-08 15:29:24 -08:00
zcp_iter.c	module/*.ko: prune .data, global .rodata	2022-01-14 15:37:55 -08:00
zcp_set.c	Support setting user properties in a channel program	2020-02-14 13:41:42 -08:00
zcp_synctask.c	Add zfs.sync.snapshot_rename	2022-09-02 13:31:19 -07:00
zcp.c	ztest: update ztest_dmu_snapshot_create_destroy()	2023-01-10 13:27:48 -08:00
zfeature.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
zfs_byteswap.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
zfs_chksum.c	Cleanup: Remove unnecessary explicit casts of pointers from allocators	2023-01-12 15:59:12 -08:00
zfs_fm.c	Configure zed's diagnosis engine with vdev properties	2023-01-23 13:14:25 -08:00
zfs_fuid.c	Cleanup: Remove unneeded semicolons	2023-01-12 16:00:30 -08:00
zfs_ioctl.c	Cleanup of dead code suggested by Clang Static Analyzer (#14380)	2023-01-17 09:57:12 -08:00
zfs_log.c	zfs_rename: support RENAME_* flags	2022-10-28 09:49:20 -07:00
zfs_onexit.c	zfs_onexit_add_cb: make action_handle point to a uintptr_t	2022-11-03 09:52:12 -07:00
zfs_quota.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
zfs_ratelimit.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
zfs_replay.c	Support idmapped mount in user namespace	2022-11-08 10:28:56 -08:00
zfs_rlock.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
zfs_sa.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
zfs_vnops.c	Cleanup: Remove unnecessary explicit casts of pointers from allocators	2023-01-12 15:59:12 -08:00
zil.c	Introduce minimal ZIL block commit delay	2023-01-24 09:20:32 -08:00
zio_checksum.c	Fix double const qualifier declarations	2022-09-30 15:34:39 -07:00
zio_compress.c	Fix declarations of non-global variables	2022-10-18 11:05:32 -07:00
zio_inject.c	Cleanup: Switch to strlcpy from strncpy	2022-09-27 16:35:29 -07:00
zio.c	ztest fails assertion in zio_write_gang_member_ready()	2023-01-09 16:43:45 -08:00
zle.c	Replace dead opensolaris.org license link	2022-07-11 14:16:13 -07:00
zrlock.c	Micro-optimize zrl_remove()	2022-11-29 09:26:03 -08:00
zthr.c	Switch from _Noreturn to __attribute__((noreturn))	2022-03-23 08:51:00 -07:00
zvol.c	Cleanup of dead code suggested by Clang Static Analyzer (#14380)	2023-01-17 09:57:12 -08:00