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mirror_zfs/module/zfs
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Alexander Motin edaec84225 Improve logging of 128KB writes 
Before my ZIL space optimization few years ago 128KB writes were logged
as two 64KB+ records in two 128KB log blocks.  After that change it
became ~127KB+/1KB+ in two 128KB log blocks to free space in the second
block for another record.  Unfortunately in case of 128KB only writes,
when space in the second block remained unused, that change increased
write latency by unbalancing checksum computation and write times
between parallel threads.  It also didn't help with SLOG space
efficiency in that case.

This change introduces new 68KB log block size, used for both writes
below 67KB and 128KB-sharp writes.  Writes of 68-127KB are still using
one 128KB block to not increase processing overhead.  Writes above
131KB are still using full 128KB blocks, since possible saving there
is small.  Mixed loads will likely also fall back to previous 128KB,
since code uses maximum of the last 16 requested block sizes.

Reviewed-by: Matt Ahrens <matt@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by:  Alexander Motin <mav@FreeBSD.org>
Closes #9409
2020-01-22 13:49:04 -08:00
..
abd.c single-chunk scatter ABDs can be treated as linear 2020-01-22 13:48:56 -08:00
aggsum.c OpenZFS 9688 - aggsum_fini leaks memory 2018-10-19 12:08:03 -07:00
arc.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
blkptr.c Undo c89 workarounds to match with upstream 2017-11-04 13:25:13 -07:00
bplist.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
bpobj.c Stack overflow in recursive bpobj_iterate_impl 2019-03-06 09:50:55 -08:00
bptree.c Native Encryption for ZFS on Linux 2017-08-14 10:36:48 -07:00
bqueue.c Wait in 'S' state when send/recv pipe is blocking 2019-06-07 12:45:40 -07:00
cityhash.c OpenZFS 8484 - Implement aggregate sum and use for arc counters 2018-06-06 09:35:59 -07:00
dataset_kstats.c Fix panic on DilOS with kstat per dataset statistics 2020-01-22 13:49:00 -08:00
dbuf_stats.c Prefix all refcount functions with zfs_ 2018-10-01 10:42:05 -07:00
dbuf.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
ddt_zap.c fat zap should prefetch when iterating 2019-09-25 11:27:47 -07:00
ddt.c ztest: scrub ddt repair 2019-01-17 15:25:00 -08:00
dmu_diff.c diff_cb() does not handle large dnodes 2020-01-22 13:49:01 -08:00
dmu_object.c Fix send/recv lost spill block 2019-05-07 15:18:44 -07:00
dmu_objset.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
dmu_recv.c Always refuse receving non-resume stream when resume state exists 2019-09-25 11:27:51 -07:00
dmu_send.c Fix send/recv lost spill block 2019-05-07 15:18:44 -07:00
dmu_traverse.c Fix traverse_impl() kmem leak 2018-08-15 09:53:44 -07:00
dmu_tx.c Improve performance by using dmu_tx_hold_*_by_dnode() 2019-09-25 11:27:50 -07:00
dmu_zfetch.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
dmu.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
dnode_sync.c Reinstate raw receive check when truncating 2019-06-07 12:45:40 -07:00
dnode.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
dsl_bookmark.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
dsl_crypt.c Fix 'zfs change-key' with unencrypted child 2020-01-22 13:49:03 -08:00
dsl_dataset.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
dsl_deadlist.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
dsl_deleg.c Update build system and packaging 2018-05-29 16:00:33 -07:00
dsl_destroy.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
dsl_dir.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
dsl_pool.c dmu_tx_wait() hang likely due to cv_signal() in dsl_pool_dirty_delta() 2020-01-22 13:48:57 -08:00
dsl_prop.c Update build system and packaging 2018-05-29 16:00:33 -07:00
dsl_scan.c Fix stalled txg with repeated noop scans 2020-01-22 13:49:00 -08:00
dsl_synctask.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
dsl_userhold.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
edonr_zfs.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
fm.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
gzip.c Update build system and packaging 2018-05-29 16:00:33 -07:00
hkdf.c Encryption patch follow-up 2017-10-11 16:54:48 -04:00
lz4.c Reword comment in lz4_compress_zfs 2019-05-02 16:46:04 -07:00
lzjb.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
Makefile.in Add TRIM support 2019-03-29 09:13:20 -07:00
metaslab.c Prevent metaslab_sync panic due to spa_final_dirty_txg 2020-01-22 13:48:58 -08:00
mmp.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
multilist.c Avoid extra taskq_dispatch() calls by DMU 2019-09-25 11:27:48 -07:00
pathname.c Disable unused pathname::pn_path* (unneeded in Linux) 2019-09-25 11:27:49 -07:00
policy.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
qat_compress.c QAT related bug fixes 2019-09-25 11:27:51 -07:00
qat_crypt.c QAT related bug fixes 2019-09-25 11:27:51 -07:00
qat.c QAT related bug fixes 2019-09-25 11:27:51 -07:00
qat.h Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
range_tree.c Restrict kstats and print real pointers 2019-04-04 18:57:06 -07:00
refcount.c Prevent race in blkptr_verify against device removal 2020-01-22 13:48:57 -08:00
rrwlock.c Prefix all refcount functions with zfs_ 2018-10-01 10:42:05 -07:00
sa.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
sha256.c SHA256 QAT acceleration 2018-03-15 10:53:58 -07:00
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_checkpoint.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
spa_config.c Fix /etc/hostid on root pool deadlock 2019-09-25 11:27:51 -07:00
spa_errlog.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
spa_history.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
spa_misc.c Prevent race in blkptr_verify against device removal 2020-01-22 13:48:57 -08:00
spa_stats.c Restrict kstats and print real pointers 2019-04-04 18:57:06 -07:00
spa.c Fix pool creation with feature@allocation_classes disabled 2020-01-22 13:49:02 -08:00
space_map.c Restrict kstats and print real pointers 2019-04-04 18:57:06 -07:00
space_reftree.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -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
trace.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
txg.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
uberblock.c MMP interval and fail_intervals in uberblock 2019-03-21 12:47:57 -07:00
unique.c Performance optimization of AVL tree comparator functions 2016-08-31 14:35:34 -07:00
vdev_cache.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
vdev_disk.c Add warning for zfs_vdev_elevator option removal 2020-01-22 13:49:01 -08:00
vdev_file.c Update vdev_ops_t from illumos 2019-09-25 11:27:48 -07:00
vdev_indirect_births.c Fixes: #8934 Large kmem_alloc 2019-09-25 11:27:49 -07:00
vdev_indirect_mapping.c Get rid of space_map_update() for ms_synced_length 2019-02-12 10:38:11 -08:00
vdev_indirect.c Update vdev_ops_t from illumos 2019-09-25 11:27:48 -07:00
vdev_initialize.c Include prototypes for vdev_initialize 2020-01-22 13:49:03 -08:00
vdev_label.c panic in removal_remap test on 4K devices 2019-09-25 11:27:47 -07:00
vdev_mirror.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
vdev_missing.c Update vdev_ops_t from illumos 2019-09-25 11:27:48 -07:00
vdev_queue.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
vdev_raidz_math_aarch64_neon_common.h Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
vdev_raidz_math_aarch64_neon.c Linux 5.0 compat: SIMD compatibility 2020-01-22 13:49:01 -08:00
vdev_raidz_math_aarch64_neonx2.c Linux 5.0 compat: SIMD compatibility 2020-01-22 13:49:01 -08:00
vdev_raidz_math_avx2.c Linux 5.0 compat: SIMD compatibility 2020-01-22 13:49:01 -08:00
vdev_raidz_math_avx512bw.c Linux 5.0 compat: SIMD compatibility 2020-01-22 13:49:01 -08:00
vdev_raidz_math_avx512f.c Linux 5.0 compat: SIMD compatibility 2020-01-22 13:49:01 -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 Linux 5.3: Fix switch() fall though compiler errors 2019-09-25 11:27:50 -07:00
vdev_raidz_math_sse2.c Linux 5.0 compat: SIMD compatibility 2020-01-22 13:49:01 -08:00
vdev_raidz_math_ssse3.c Linux 5.0 compat: SIMD compatibility 2020-01-22 13:49:01 -08:00
vdev_raidz_math.c Linux 5.0 compat: SIMD compatibility 2020-01-22 13:49:01 -08:00
vdev_raidz.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
vdev_removal.c Device removal of indirect vdev panics the kernel 2020-01-22 13:49:01 -08:00
vdev_root.c Update vdev_ops_t from illumos 2019-09-25 11:27:48 -07:00
vdev_trim.c Add TRIM support 2019-03-29 09:13:20 -07:00
vdev.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
zap_leaf.c Off-by-one in zap_leaf_array_create() 2019-01-18 09:58:46 -08:00
zap_micro.c fat zap should prefetch when iterating 2019-09-25 11:27:47 -07:00
zap.c fat zap should prefetch when iterating 2019-09-25 11:27:47 -07:00
zcp_get.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
zcp_global.c OpenZFS 8600 - ZFS channel programs - snapshot 2018-02-08 15:29:24 -08:00
zcp_iter.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
zcp_synctask.c OpenZFS 9166 - zfs storage pool checkpoint 2018-06-26 10:07:42 -07:00
zcp.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
zfeature.c Consistently captialize GUID for features 2019-04-16 10:01:51 -07:00
zfs_acl.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
zfs_byteswap.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
zfs_ctldir.c Fix automount for root filesystems 2020-01-22 13:49:02 -08:00
zfs_debug.c Restrict kstats and print real pointers 2019-04-04 18:57:06 -07:00
zfs_dir.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
zfs_fm.c Add zpool status -s (slow I/Os) and -p (parseable) 2018-11-08 16:47:24 -08:00
zfs_fuid.c Update build system and packaging 2018-05-29 16:00:33 -07:00
zfs_ioctl.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
zfs_log.c Improve write performance by using dmu_read_by_dnode() 2020-01-22 13:48:57 -08:00
zfs_onexit.c Update build system and packaging 2018-05-29 16:00:33 -07:00
zfs_ratelimit.c Change checksum & IO delay ratelimit values 2018-03-04 17:34:51 -08:00
zfs_replay.c Fix zil replay panic when TX_REMOVE followed by TX_CREATE 2019-09-25 11:27:51 -07:00
zfs_rlock.c Rename rangelock_ functions to zfs_rangelock_ 2020-01-22 13:49:02 -08:00
zfs_sa.c Project Quota on ZFS 2018-02-13 14:54:54 -08:00
zfs_sysfs.c Prevent pointer to an out-of-scope local variable 2019-09-25 11:27:48 -07:00
zfs_vfsops.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
zfs_vnops.c Rename rangelock_ functions to zfs_rangelock_ 2020-01-22 13:49:02 -08:00
zfs_znode.c Rename rangelock_ functions to zfs_rangelock_ 2020-01-22 13:49:02 -08:00
zil.c Improve logging of 128KB writes 2020-01-22 13:49:04 -08:00
zio_checksum.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
zio_compress.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
zio_crypt.c Linux 5.0 compat: SIMD compatibility 2020-01-22 13:49:01 -08:00
zio_inject.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
zio.c Prevent race in blkptr_verify against device removal 2020-01-22 13:48:57 -08:00
zle.c Fix zle_decompress out of bound access 2018-02-09 10:08:05 -08:00
zpl_ctldir.c RHEL 7.5 compat: FMODE_KABI_ITERATE 2018-05-02 15:01:24 -07:00
zpl_export.c Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
zpl_file.c Fix errant EFAULT during writes (#8719) 2019-05-08 10:04:04 -07:00
zpl_inode.c Fix errant EFAULT during writes (#8719) 2019-05-08 10:04:04 -07:00
zpl_super.c Fix typos in module/zfs/ 2020-01-22 13:48:59 -08:00
zpl_xattr.c Drop redundant POSIX ACL check in zpl_init_acl() 2019-09-25 11:27:49 -07:00
zrlock.c Update build system and packaging 2018-05-29 16:00:33 -07:00
zthr.c Fix txg_wait_open() load average inflation 2019-04-04 09:44:46 -07:00
zvol.c Rename rangelock_ functions to zfs_rangelock_ 2020-01-22 13:49:02 -08:00