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Alexander Motin 1c0c729ab4
Several sorted scrub optimizations 
- Reduce size and comparison complexity of q_exts_by_size B-tree.
Previous code used two 64-bit divisions and many other operations to
compare two B-tree elements.  It created enormous overhead.  This
implementation moves the math to the upper level and stores the score
in the B-tree elements themselves.  Since all that we need to store in
that B-tree is the extent score and offset, those can fit into single
8 byte value instead of 24 bytes of q_exts_by_addr element and can be
compared with single operation.
 - Better decouple secondary tree logic from main range_tree by moving
rt_btree_ops and related functions into dsl_scan.c as ext_size_ops.
Those functions are very small to worry about the code duplication and
range_tree does not need to know details such as rt_btree_compare.
 - Instead of accounting number of pending bytes per pool, that needs
atomic on global variable per block, account the number of non-empty
per-vdev queues, that change much more rarely.
 - When extent scan is interrupted by TXG end, continue it in the next
TXG instead of selecting next best extent.  It allows to avoid leaving
one truncated (and so likely not the best any more) extent each TXG.

On top of some other optimizations this saves about 1.5 minutes out of
10 to scrub pool of 12 SSDs, storing 1.5TB of 4KB zvol blocks.

Reviewed-by: Paul Dagnelie <pcd@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tom Caputi <caputit1@tcnj.edu>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Sponsored-By: iXsystems, Inc.
Closes #13576
 		2022-06-24 09:50:37 -07:00
..
crypto autoconf: single-step includes 2022-05-10 10:18:51 -07:00
fm autoconf: single-step includes 2022-05-10 10:18:51 -07:00
fs Replace ZPROP_INVAL with ZPROP_USERPROP where it means a user property 2022-06-14 11:27:53 -07:00
lua autoconf: single-step includes 2022-05-10 10:18:51 -07:00
sysevent autoconf: single-step includes 2022-05-10 10:18:51 -07:00
zstd Unbreak zstd build on sparc64 2022-05-25 09:18:49 -07:00
abd.h Avoid small buffer copying on write 2021-07-27 16:05:47 -07:00
abd_impl.h Avoid small buffer copying on write 2021-07-27 16:05:47 -07:00
aggsum.h More aggsum optimizations 2021-06-07 09:02:47 -07:00
arc.h include: sys/arc.h: shim out arc_referenced() 2021-12-23 09:36:26 -08:00
arc_impl.h Replace *CTASSERT() with _Static_assert() 2022-01-26 11:38:52 -08:00
avl.h lib{efi,avl,share,tpool,zfs_core,zfsbootenv,zutil}: -fvisibility=hidden 2021-06-09 17:04:32 -07:00
avl_impl.h Remove avl_size field from struct avl_tree 2021-07-01 09:32:31 -06:00
bitops.h Remove NOTE(CONSTCOND) and note.h 2021-07-26 12:07:53 -07:00
blake3.h Fix memory allocation issue for BLAKE3 context 2022-06-21 14:32:09 -07:00
blkptr.h OpenZFS 8067 - zdb should be able to dump literal embedded block pointer 2017-07-07 11:28:01 -07:00
bplist.h Fast Clone Deletion 2019-07-26 10:54:14 -07:00
bpobj.h Fast Clone Deletion 2019-07-26 10:54:14 -07:00
bptree.h Illumos 4914 - zfs on-disk bookmark structure should be named *_phys_t 2014-08-06 14:48:41 -07:00
bqueue.h Implement Redacted Send/Receive 2019-06-19 09:48:12 -07:00
btree.h Fix typos 2020-06-09 21:24:09 -07:00
dataset_kstats.h Introduce write-mostly sums 2021-05-27 14:27:29 -06:00
dbuf.h More speculative prefetcher improvements 2022-05-25 10:12:52 -07:00
ddt.h Appease GCC sprintf warnings found on Fedora 32/GCC 10.0.1 2020-08-24 10:32:59 -07:00
dmu.h Improve log spacemap load time 2022-04-26 10:44:21 -07:00
dmu_impl.h Remove UIO_ZEROCOPY functions structures 2020-10-30 10:00:33 -07:00
dmu_objset.h Introduce a tunable to exclude special class buffers from L2ARC 2021-11-11 12:52:16 -08:00
dmu_recv.h module/*.ko: prune .data, global .rodata 2022-01-14 15:37:55 -08:00
dmu_redact.h Suppress cppcheck invalidSyntax warninigs 2021-03-05 17:56:35 -08:00
dmu_send.h Removed duplicated includes 2021-03-22 12:34:58 -07:00
dmu_traverse.h Implement Redacted Send/Receive 2019-06-19 09:48:12 -07:00
dmu_tx.h Refactor Log Size Limit 2022-05-24 09:46:35 -07:00
dmu_zfetch.h More speculative prefetcher improvements 2022-05-25 10:12:52 -07:00
dnode.h Silence unused-but-set-variable warning 2022-05-25 17:26:59 -07:00
dsl_bookmark.h Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
dsl_crypt.h dmu_objset_from_ds must be called with dp_config_rwlock held 2020-03-12 10:55:02 -07:00
dsl_dataset.h Improve zpool status output, list all affected datasets 2022-04-25 17:25:42 -07:00
dsl_deadlist.h Add fast path for zfs_ioc_space_snaps() handling of empty_bpobj 2019-08-20 11:34:52 -07:00
dsl_deleg.h Remove code for zfs remap 2019-06-24 16:44:01 -07:00
dsl_destroy.h Fast Clone Deletion 2019-07-26 10:54:14 -07:00
dsl_dir.h Remove NOTE(CONSTCOND) and note.h 2021-07-26 12:07:53 -07:00
dsl_pool.h Refactor Log Size Limit 2022-05-24 09:46:35 -07:00
dsl_prop.h Support inheriting properties in channel programs 2020-01-22 17:03:17 -08:00
dsl_scan.h Several sorted scrub optimizations 2022-06-24 09:50:37 -07:00
dsl_synctask.h Add upper bound for slop space calculation 2021-02-24 09:52:43 -08:00
dsl_userhold.h Illumos #3740 2013-11-04 11:17:48 -08:00
edonr.h OpenZFS 4185 - add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R 2016-10-03 14:51:15 -07:00
efi_partition.h Integrate carcass of libspl/i/s/vtoc.h into i/s/efi_partition.h 2022-03-15 15:13:54 -07:00
frame.h Linux 5.10 compat: frame.h renamed objtool.h 2020-11-02 22:01:10 +00:00
hkdf.h Encryption patch follow-up 2017-10-11 16:54:48 -04:00
metaslab.h Improve log spacemap load time 2022-04-26 10:44:21 -07:00
metaslab_impl.h Improve log spacemap load time 2022-04-26 10:44:21 -07:00
mmp.h Add zfs_multihost_interval tunable handler for FreeBSD 2020-06-23 13:32:42 -07:00
mntent.h Add FreeBSD required defines to mntent.h 2019-11-30 15:49:09 -08:00
mod.h linux: module: weld all but spl.ko into zfs.ko 2022-04-20 13:28:24 -07:00
multilist.h Re-embed multilist_t storage 2021-06-10 10:42:31 -06:00
nvpair.h module/*.ko: prune .data, global .rodata 2022-01-14 15:37:55 -08:00
nvpair_impl.h Add `const` to nvlist functions to properly expose their real behavior 2021-12-06 18:19:13 -07:00
objlist.h Implement Redacted Send/Receive 2019-06-19 09:48:12 -07:00
pathname.h Replace ZFS on Linux references with OpenZFS 2020-10-08 20:10:13 -07:00
qat.h include: qat.h: mark unused macro arguments as used 2021-12-23 09:36:21 -08:00
range_tree.h Several sorted scrub optimizations 2022-06-24 09:50:37 -07:00
rrwlock.h Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
sa.h module/*.ko: prune .data, global .rodata 2022-01-14 15:37:55 -08:00
sa_impl.h Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
skein.h OpenZFS 4185 - add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R 2016-10-03 14:51:15 -07:00
spa.h Expose zpool guids through kstats 2022-05-18 10:25:33 -07:00
spa_boot.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
spa_checkpoint.h Serialize ZTHR operations to eliminate races 2019-01-13 10:09:46 -08:00
spa_checksum.h Implementation of AVX2 optimized Fletcher-4 2016-06-02 14:30:51 -07:00
spa_impl.h module/*.ko: prune .data, global .rodata 2022-01-14 15:37:55 -08:00
spa_log_spacemap.h Improve log spacemap load time 2022-04-26 10:44:21 -07:00
space_map.h Extend zdb to print inconsistencies in livelists and metaslabs 2020-07-14 17:51:05 -07:00
space_reftree.h Reduce loaded range tree memory usage 2019-10-09 10:36:03 -07:00
sysevent.h OpenZFS 6939 - add sysevents to zfs core for commands 2017-07-12 21:28:13 -07:00
txg.h Optimize txg_kick() process (#12274) 2021-07-01 09:20:27 -06:00
txg_impl.h Fix typos in include/ 2019-08-30 09:53:15 -07:00
u8_textprep.h Throw const on some strings 2020-10-02 17:44:10 -07:00
u8_textprep_data.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
uberblock.h Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
uberblock_impl.h MMP interval and fail_intervals in uberblock 2019-03-21 12:47:57 -07:00
uio_impl.h Cleaning up uio headers 2021-02-20 20:16:50 -08:00
unique.h Illumos #3742 2013-11-04 10:55:25 -08:00
uuid.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
vdev.h Vdev Properties Feature 2021-11-30 07:46:25 -07:00
vdev_disk.h Make struct vdev_disk_t be platform private 2020-06-16 11:43:33 -07:00
vdev_draid.h Verify dRAID empty sectors 2022-01-04 16:46:32 -08:00
vdev_file.h Add zfs_file_* interface, remove vnodes 2019-11-21 09:32:57 -08:00
vdev_impl.h Replace *CTASSERT() with _Static_assert() 2022-01-26 11:38:52 -08:00
vdev_indirect_births.h OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
vdev_indirect_mapping.h OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
vdev_initialize.h Add TRIM support 2019-03-29 09:13:20 -07:00
vdev_raidz.h Verify dRAID empty sectors 2022-01-04 16:46:32 -08:00
vdev_raidz_impl.h module/*.ko: prune .data, global .rodata 2022-01-14 15:37:55 -08:00
vdev_rebuild.h Fix various typos 2021-04-02 18:52:15 -07:00
vdev_removal.h panic in removal_remap test on 4K devices 2019-06-13 13:12:39 -07:00
vdev_trim.h Trim L2ARC 2020-06-09 10:15:08 -07:00
xvattr.h Forbid b{copy,zero,cmp}(). Don't include <strings.h> for <string.h> 2022-03-15 15:13:48 -07:00
zap.h Linux 5.19 compat: zap_flags_t conflict 2022-05-31 12:04:39 -07:00
zap_impl.h OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
zap_leaf.h Fix ENOSPC in "Handle zap_add() failures in ..." 2018-04-18 14:19:50 -07:00
zcp.h filesystem_limit/snapshot_limit is incorrectly enforced against root 2020-07-11 17:18:02 -07:00
zcp_global.h OpenZFS 7431 - ZFS Channel Programs 2018-02-08 15:28:18 -08:00
zcp_iter.h OpenZFS 7431 - ZFS Channel Programs 2018-02-08 15:28:18 -08:00
zcp_prop.h OpenZFS 7431 - ZFS Channel Programs 2018-02-08 15:28:18 -08:00
zcp_set.h Support setting user properties in a channel program 2020-02-14 13:41:42 -08:00
zfeature.h Revert "zhack: Add 'feature disable' command" 2016-05-17 11:52:07 -07:00
zfs_acl.h module/*.ko: prune .data, global .rodata 2022-01-14 15:37:55 -08:00
zfs_bootenv.h zfs label bootenv should store data as nvlist 2020-09-15 15:42:27 -07:00
zfs_chksum.h Introduce BLAKE3 checksums as an OpenZFS feature 2022-06-08 15:55:57 -07:00
zfs_context.h Remove hw_serial, ddi_strtoul() 2022-05-13 10:15:31 -07:00
zfs_debug.h Annotated dprintf as printf-like 2021-06-22 21:53:45 -07:00
zfs_delay.h Update build system and packaging 2018-05-29 16:00:33 -07:00
zfs_file.h file reference counts can get corrupted 2021-07-10 19:00:37 -06:00
zfs_fuid.h Replace sprintf()->snprintf() and strcpy()->strlcpy() 2020-06-07 11:42:12 -07:00
zfs_ioctl.h Introduce BLAKE3 checksums as an OpenZFS feature 2022-06-08 15:55:57 -07:00
zfs_ioctl_impl.h module/*.ko: prune .data, global .rodata 2022-01-14 15:37:55 -08:00
zfs_onexit.h file reference counts can get corrupted 2021-07-10 19:00:37 -06:00
zfs_project.h Minor diff reduction with ZoF in include/sys 2019-11-27 11:11:03 -08:00
zfs_quota.h File incorrectly zeroed when receiving incremental stream that toggles -L 2020-06-09 10:41:01 -07:00
zfs_racct.h Restore FreeBSD resource usage accounting 2021-02-19 22:34:33 -08:00
zfs_ratelimit.h Change checksum & IO delay ratelimit values 2018-03-04 17:34:51 -08:00
zfs_refcount.h Correct refcount_add in dmu_zfetch 2021-10-08 11:10:34 -07:00
zfs_rlock.h Add a "try" operation for range locks 2020-07-06 11:53:31 -07:00
zfs_sa.h log xattr=sa create/remove/update to ZIL 2022-02-22 13:06:43 -08:00
zfs_stat.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
zfs_sysfs.h zcommon: pre-iterate over sysfs instead of statting every feature 2021-12-16 16:43:10 -08:00
zfs_vfsops.h Add 'zfs rename -u' to rename without remounting 2020-09-01 16:14:16 -07:00
zfs_vnops.h Extending FreeBSD UIO Struct 2021-01-20 21:27:30 -08:00
zfs_znode.h Speed up WB_SYNC_NONE when a WB_SYNC_ALL occurs simultaneously 2022-05-03 13:23:26 -07:00
zil.h log xattr=sa create/remove/update to ZIL 2022-02-22 13:06:43 -08:00
zil_impl.h Fix inflated quiesce time caused by lwb_tx during zil_commit() 2022-05-26 09:36:14 -07:00
zio.h Introduce BLAKE3 checksums as an OpenZFS feature 2022-06-08 15:55:57 -07:00
zio_checksum.h Introduce BLAKE3 checksums as an OpenZFS feature 2022-06-08 15:55:57 -07:00
zio_compress.h Add zstd support to zfs 2020-08-20 10:30:06 -07:00
zio_crypt.h module/*.ko: prune .data, global .rodata 2022-01-14 15:37:55 -08:00
zio_impl.h Add zstd support to zfs 2020-08-20 10:30:06 -07:00
zio_priority.h Add device rebuild feature 2020-07-03 11:05:50 -07:00
zrlock.h OpenZFS 6328 - Fix cstyle errors in zfs codebase 2017-01-12 09:42:11 -08:00
zthr.h Avoid memory allocations in the ARC eviction thread 2022-01-21 10:28:13 -08:00
zvol.h Remove unused function zvol_set_volblocksize() 2021-10-26 17:07:53 -07:00
zvol_impl.h zvol: make calls to platform ops static 2022-02-07 10:24:38 -08:00