Alexander Motin 701ebd014a OpenZFS 8835 - Speculative prefetch in ZFS not working for misaligned reads ...

In case of misaligned I/O sequential requests are not detected as such
due to overlaps in logical block sequence:

    dmu_zfetch(fffff80198dd0ae0, 27347, 9, 1)
    dmu_zfetch(fffff80198dd0ae0, 27355, 9, 1)
    dmu_zfetch(fffff80198dd0ae0, 27363, 9, 1)
    dmu_zfetch(fffff80198dd0ae0, 27371, 9, 1)
    dmu_zfetch(fffff80198dd0ae0, 27379, 9, 1)
    dmu_zfetch(fffff80198dd0ae0, 27387, 9, 1)

This patch makes single block overlap to be counted as a stream hit,
improving performance up to several times.

Authored by: Alexander Motin <mav@FreeBSD.org>
Approved by: Gordon Ross <gwr@nexenta.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Allan Jude <allanjude@freebsd.org>
Reviewed by: Gvozden Neskovic <neskovic@gmail.com>
Reviewed by: George Melikov <mail@gmelikov.ru>
Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>

OpenZFS-issue: https://www.illumos.org/issues/8835
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/aab6dd482a
Closes #7062

2018-01-30 10:27:31 -06:00

..

abd.c

Update for cppcheck v1.80

2018-01-30 10:27:31 -06:00

arc.c

Fix ARC hit rate

2018-01-30 10:27:31 -06:00

blkptr.c

OpenZFS 8067 - zdb should be able to dump literal embedded block pointer

2017-07-07 11:28:01 -07:00

bplist.c

Change KM_PUSHPAGE -> KM_SLEEP

2015-01-16 14:41:26 -08:00

bpobj.c

Don't dirty bpobj if it has no entries

2017-05-26 11:42:10 -07:00

bptree.c

OpenZFS 7082 - bptree_iterate() passes wrong args to zfs_dbgmsg()

2017-01-17 14:49:24 -08:00

bqueue.c

Call cv_signal() with mutex held

2017-06-26 14:36:49 -07:00

dbuf_stats.c

Improved dnode allocation and dmu_hold_impl() (#6611)

2017-09-13 15:46:15 -07:00

dbuf.c

Fix ARC hit rate

2018-01-30 10:27:31 -06:00

ddt_zap.c

Change KM_PUSHPAGE -> KM_SLEEP

2015-01-16 14:41:26 -08:00

ddt.c

Cache ddt_get_dedup_dspace() value if there was no ddt changes

2016-12-02 16:59:35 -07:00

dmu_diff.c

OpenZFS 6950 - ARC should cache compressed data

2016-09-13 09:58:33 -07:00

dmu_object.c

Improved dnode allocation and dmu_hold_impl() (#6611)

2017-09-13 15:46:15 -07:00

dmu_objset.c

dmu_objset: release bonus buffer in failure path

2018-01-30 10:27:30 -06:00

dmu_send.c

Skip FREEOBJECTS for objects which can't exist

2017-10-16 10:57:55 -07:00

dmu_traverse.c

Add TASKQID_INVALID

2016-11-02 12:14:45 -07:00

dmu_tx.c

Call commit callbacks from the tail of the list

2018-01-30 10:27:31 -06:00

dmu_zfetch.c

OpenZFS 8835 - Speculative prefetch in ZFS not working for misaligned reads

2018-01-30 10:27:31 -06:00

dmu.c

Fix dirty check in dmu_offset_next()

2017-11-21 13:11:29 -06:00

dnode_sync.c

OpenZFS 7968 - multi-threaded spa_sync()

2017-03-20 18:36:00 -07:00

dnode.c

Improved dnode allocation and dmu_hold_impl() (#6611)

2017-09-13 15:46:15 -07:00

dsl_bookmark.c

OpenZFS 8377 - Panic in bookmark deletion

2017-06-30 11:11:01 -07:00

dsl_dataset.c

OpenZFS 7600 - zfs rollback should pass target snapshot to kernel

2017-07-04 15:29:52 -07:00

dsl_deadlist.c

OpenZFS 5428 - provide fts(), reallocarray(), and strtonum()

2017-07-08 20:35:35 -07:00

dsl_deleg.c

Performance optimization of AVL tree comparator functions

2016-08-31 14:35:34 -07:00

dsl_destroy.c

OpenZFS 7254 - ztest failed assertion in ztest_dataset_dirobj_verify: dirobjs + 1 == usedobjs

2017-01-27 11:43:42 -08:00

dsl_dir.c

Reduce stack usage of dsl_dir_tempreserve_impl

2017-06-12 11:41:03 -07:00

dsl_pool.c

Multi-modifier protection (MMP)

2017-07-13 13:54:00 -04:00

dsl_prop.c

Fix dsl_props_set_sync_impl to work with nested nvlist

2016-12-20 18:46:59 -08:00

dsl_scan.c

OpenZFS 6939 - add sysevents to zfs core for commands

2017-07-12 21:28:13 -07:00

dsl_synctask.c

Illumos 4951 - ZFS administrative commands should use reserved space

2015-05-04 09:41:10 -07:00

dsl_userhold.c

OpenZFS 5428 - provide fts(), reallocarray(), and strtonum()

2017-07-08 20:35:35 -07:00

edonr_zfs.c

DLPX-44812 integrate EP-220 large memory scalability

2016-11-29 14:34:27 -08:00

fm.c

Linux 4.14 compat: CONFIG_GCC_PLUGIN_RANDSTRUCT

2017-12-04 17:21:39 -08:00

gzip.c

GZIP compression offloading with QAT accelerator

2017-03-22 17:58:47 -07:00

lz4.c

Fix LZ4_uncompress_unknownOutputSize caused panic

2017-05-19 13:45:46 -07:00

lzjb.c

Change KM_PUSHPAGE -> KM_SLEEP

2015-01-16 14:41:26 -08:00

Makefile.in

Multi-modifier protection (MMP)

2017-07-13 13:54:00 -04:00

metaslab.c

OpenZFS 8023 - Panic destroying a metaslab deferred range tree

2017-04-09 16:12:35 -07:00

mmp.c

Reimplement vdev_random_leaf and rename it

2017-11-20 16:19:23 -06:00

multilist.c

OpenZFS 7968 - multi-threaded spa_sync()

2017-03-20 18:36:00 -07:00

pathname.c

Add pn_alloc()/pn_free() functions

2016-04-21 09:49:25 -07:00

policy.c

codebase style improvements for OpenZFS 6459 port

2017-01-22 13:25:40 -08:00

qat_compress.c

Bug fix in qat_compress.c when compressed size is < 4KB

2017-11-20 16:48:26 -06:00

qat_compress.h

GZIP compression offloading with QAT accelerator

2017-03-22 17:58:47 -07:00

range_tree.c

Performance optimization of AVL tree comparator functions

2016-08-31 14:35:34 -07:00

refcount.c

Linux 4.11 compat: avoid refcount_t name conflict

2017-02-28 16:10:18 -08:00

rrwlock.c

Fix spelling

2017-01-03 11:31:18 -06:00

sa.c

OpenZFS 8061 - sa_find_idx_tab can be declared more type-safely

2017-04-14 11:11:28 -07:00

sha256.c

DLPX-44812 integrate EP-220 large memory scalability

2016-11-29 14:34:27 -08:00

skein_zfs.c

DLPX-44812 integrate EP-220 large memory scalability

2016-11-29 14:34:27 -08:00

spa_boot.c

Add linux kernel module support

2010-08-31 13:41:58 -07:00

spa_config.c

Multi-modifier protection (MMP)

2017-07-13 13:54:00 -04:00

spa_errlog.c

OpenZFS 5428 - provide fts(), reallocarray(), and strtonum()

2017-07-08 20:35:35 -07:00

spa_history.c

Emit history events for 'zpool create'

2017-12-04 17:21:03 -08:00

spa_misc.c

Multi-modifier protection (MMP)

2017-07-13 13:54:00 -04:00

spa_stats.c

Multi-modifier protection (MMP)

2017-07-13 13:54:00 -04:00

spa.c

Fix multihost stale cache file import

2017-12-18 10:31:01 -08:00

space_map.c

OpenZFS 8023 - Panic destroying a metaslab deferred range tree

2017-04-09 16:12:35 -07:00

space_reftree.c

OpenZFS 6328 - Fix cstyle errors in zfs codebase

2017-01-12 09:42:11 -08:00

trace.c

OpenZFS 6531 - Provide mechanism to artificially limit disk performance

2016-05-26 10:11:51 -07:00

txg.c

OpenZFS 8063 - verify that we do not attempt to access inactive txg

2017-05-10 13:52:22 -04:00

uberblock.c

Multi-modifier protection (MMP)

2017-07-13 13:54:00 -04:00

unique.c

Performance optimization of AVL tree comparator functions

2016-08-31 14:35:34 -07:00

vdev_cache.c

Fix wrong offset args in vdev_cache_write

2017-03-28 11:06:22 -07:00

vdev_disk.c

Linux 4.14 compat: IO acct, global_page_state, etc (#6655)

2017-09-19 14:24:34 -07:00

vdev_file.c

Skip spurious resilver IO on raidz vdev

2017-05-12 17:28:03 -07:00

vdev_label.c

Use linear abd in vdev_copy_uberblocks()

2017-10-16 10:57:55 -07:00

vdev_mirror.c

vdev_mirror: load balancing fixes

2018-01-30 10:27:30 -06:00

vdev_missing.c

Skip spurious resilver IO on raidz vdev

2017-05-12 17:28:03 -07:00

vdev_queue.c

vdev_mirror: load balancing fixes

2018-01-30 10:27:30 -06:00

vdev_raidz_math_aarch64_neon_common.h

ABD raidz NEON support

2016-11-29 14:34:33 -08:00

vdev_raidz_math_aarch64_neon.c

codebase style improvements for OpenZFS 6459 port

2017-01-22 13:25:40 -08:00

vdev_raidz_math_aarch64_neonx2.c

ABD raidz NEON support

2016-11-29 14:34:33 -08:00

vdev_raidz_math_avx2.c

ABD raidz avx512f support

2016-11-29 14:34:33 -08:00

vdev_raidz_math_avx512bw.c

ABD: Adapt avx512bw raidz assembly

2016-12-15 17:31:33 -08:00

vdev_raidz_math_avx512f.c

Use cstyle -cpP in make cstyle check

2016-12-12 10:46:26 -08:00

vdev_raidz_math_impl.h

codebase style improvements for OpenZFS 6459 port

2017-01-22 13:25:40 -08:00

vdev_raidz_math_scalar.c

ABD Vectorized raidz

2016-11-29 14:34:33 -08:00

vdev_raidz_math_sse2.c

ABD raidz avx512f support

2016-11-29 14:34:33 -08:00

vdev_raidz_math_ssse3.c

codebase style improvements for OpenZFS 6459 port

2017-01-22 13:25:40 -08:00

vdev_raidz_math.c

codebase style improvements for OpenZFS 6459 port

2017-01-22 13:25:40 -08:00

vdev_raidz.c

Linux 4.14 compat: CONFIG_GCC_PLUGIN_RANDSTRUCT

2017-12-04 17:21:39 -08:00

vdev_root.c

Skip spurious resilver IO on raidz vdev

2017-05-12 17:28:03 -07:00

vdev.c

OpenZFS 6939 - add sysevents to zfs core for commands

2017-07-12 21:28:13 -07:00

zap_leaf.c

OpenZFS 1300 - filename normalization doesn't work for removes

2017-02-02 14:13:41 -08:00

zap_micro.c

Fix dnode allocation race

2017-08-08 10:17:33 -07:00

zap.c

Add missing *_destroy/*_fini calls

2017-05-04 19:26:28 -04:00

zfeature_common.c

OpenZFS 2932 - support crash dumps to raidz, etc. pools

2017-04-10 10:24:17 -07:00

zfeature.c

OpenZFS 6328 - Fix cstyle errors in zfs codebase

2017-01-12 09:42:11 -08:00

zfs_acl.c

Linux 4.14 compat: CONFIG_GCC_PLUGIN_RANDSTRUCT

2017-12-04 17:21:39 -08:00

zfs_byteswap.c

Add linux kernel module support

2010-08-31 13:41:58 -07:00

zfs_ctldir.c

Linux 4.9 compat: fix zfs_ctldir xattr handling

2017-06-05 11:26:25 -07:00

zfs_debug.c

Add line info and SET_ERROR() to ZFS debug log

2017-07-25 23:09:48 -07:00

zfs_dir.c

Use zap_count instead of cached z_size for unlink

2018-01-30 10:27:31 -06:00

zfs_fm.c

OpenZFS 6939 - add sysevents to zfs core for commands

2017-07-12 21:28:13 -07:00

zfs_fuid.c

Rename zfs_sb_t -> zfsvfs_t

2017-03-10 09:51:33 -08:00

zfs_ioctl.c

Fix zfs_ioc_pool_sync should not use fnvlist

2018-01-30 10:27:30 -06:00

zfs_log.c

OpenZFS 7578 - Fix/improve some aspects of ZIL writing

2017-06-09 09:15:37 -07:00

zfs_onexit.c

zfsdev_getminor() should check for invalid file handles

2015-06-22 17:02:13 -07:00

zfs_replay.c

Rename zfs_sb_t -> zfsvfs_t

2017-03-10 09:51:33 -08:00

zfs_rlock.c

Fix spelling

2017-01-03 11:31:18 -06:00

zfs_sa.c

Modifying XATTRs doesnt change the ctime

2017-09-13 16:05:18 -07:00

zfs_vfsops.c

Revert "Long hold the dataset during upgrade"

2017-12-06 13:25:40 -06:00

zfs_vnops.c

Update for cppcheck v1.80

2018-01-30 10:27:31 -06:00

zfs_znode.c

Fix dnode allocation race

2017-08-08 10:17:33 -07:00

zil.c

Preserve itx alloc size for zio_data_buf_free()

2017-12-04 17:21:39 -08:00

zio_checksum.c

Remove dependency on linear ABD

2017-03-29 12:24:51 -07:00

zio_compress.c

DLPX-44812 integrate EP-220 large memory scalability

2016-11-29 14:34:27 -08:00

zio_inject.c

Inject zinject(8) a percentage amount of dev errs

2017-06-16 17:21:11 -07:00

zio.c

zio_dva_throttle_done() should allow zinjected ZIO

2017-08-21 16:41:22 -07:00

zle.c

Update core ZFS code from build 121 to build 141.

2010-05-28 13:45:14 -07:00

zpl_ctldir.c

Linux 4.12 compat: CURRENT_TIME removed

2017-05-10 09:30:48 -07:00

zpl_export.c

Use cstyle -cpP in make cstyle check

2016-12-12 10:46:26 -08:00

zpl_file.c

Rename zfs_sb_t -> zfsvfs_t

2017-03-10 09:51:33 -08:00

zpl_inode.c

Linux 4.12 compat: CURRENT_TIME removed

2017-05-10 09:30:48 -07:00

zpl_super.c

Restructure mount option handling

2017-03-10 09:51:41 -08:00

zpl_xattr.c

Update for cppcheck v1.80

2018-01-30 10:27:31 -06:00

zrlock.c

OpenZFS 3746 - ZRLs are racy

2017-01-23 10:35:58 -08:00

zvol.c

Update for cppcheck v1.80

2018-01-30 10:27:31 -06:00