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490c845efe
mirror_zfs/include/sys
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Alexander Motin 490c845efe
Compact dbuf/buf hashes and lock arrays 
With default dbuf cache size of 1/32 of ARC, it makes no sense to have
hash table of the same size (or even bigger on Linux).  Reduce it to
1/8 of ARC's one, still leaving some slack, assuming higher I/O rate
via dbuf cache than via ARC.

Remove padding from ARC hash locks array.  The idea behind padding
is to avoid false sharing between locks.  It would have sense if
there would be a limited number of very busy locks.  But since we
have no limit on the number, using the same memory for more locks we
can achieve even lower lock contention with the same false sharing,
or we can use less memory for the same contention level.

Reduce number of hash locks from 8192 to 2048.  The number is still
big enough to not cause contention, but reduced memory size improves
cache hit rate for mutex_tryenter() in ARC eviction thread, saving
about 1% of the thread time.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Sponsored-By: iXsystems, Inc.
Closes #12289
2021-07-01 09:30:31 -06:00
..
crypto gcc 11 cleanup 2021-06-23 17:57:06 -06:00
fm module/zfs: remove zfs_zevent_console and zfs_zevent_cols 2021-05-10 11:00:15 -07:00
fs libzfs: convert to -fvisibility=hidden 2021-06-03 13:17:55 -07:00
lua FreeBSD: Reduce stack usage of Lua 2020-09-22 16:03:11 -07:00
sysevent Avoid installing kernel headers on FreeBSD 2020-06-27 17:40:14 -07:00
zstd zstd: track allocator statistics 2020-10-30 15:26:10 -07:00
abd_impl.h Fix abd leak, kmem_free correct size of abd_t 2021-07-01 09:28:15 -06:00
abd.h Make inline ABD predicates compatible with C++ 2021-02-15 10:15:50 -08:00
aggsum.h More aggsum optimizations 2021-06-07 09:02:47 -07:00
arc_impl.h Use wmsum for arc, abd, dbuf and zfetch statistics. (#12172) 2021-06-16 18:19:34 -06:00
arc.h Implement memory and CPU hotplug 2020-12-10 14:09:23 -08:00
avl_impl.h lib{efi,avl,share,tpool,zfs_core,zfsbootenv,zutil}: -fvisibility=hidden 2021-06-09 17:04:32 -07:00
avl.h lib{efi,avl,share,tpool,zfs_core,zfsbootenv,zutil}: -fvisibility=hidden 2021-06-09 17:04:32 -07:00
bitops.h Reduce loaded range tree memory usage 2019-10-09 10:36:03 -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 Compact dbuf/buf hashes and lock arrays 2021-07-01 09:30:31 -06:00
ddt.h Appease GCC sprintf warnings found on Fedora 32/GCC 10.0.1 2020-08-24 10:32:59 -07:00
dmu_impl.h Remove UIO_ZEROCOPY functions structures 2020-10-30 10:00:33 -07:00
dmu_objset.h Re-embed multilist_t storage 2021-06-10 10:42:31 -06:00
dmu_recv.h Removed duplicated includes 2021-03-22 12:34:58 -07:00
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 Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
dmu_zfetch.h Split dmu_zfetch() speculation and execution parts 2021-03-19 22:56:11 -07:00
dmu.h Set aside a metaslab for ZIL blocks 2021-01-21 15:12:54 -08:00
dnode.h gcc 11 cleanup 2021-06-23 17:57:06 -06:00
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 implicit conversion from 'boolean_t' to 'ds_hold_flags_t' 2020-12-27 16:31:02 -08:00
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 Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
dsl_pool.h Eliminate Linux specific inode usage from common code 2019-12-11 11:53:57 -08:00
dsl_prop.h Support inheriting properties in channel programs 2020-01-22 17:03:17 -08:00
dsl_scan.h Use dsl_scan_setup_check() to setup a scrub 2021-04-08 14:33:15 -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 lib{efi,avl,share,tpool,zfs_core,zfsbootenv,zutil}: -fvisibility=hidden 2021-06-09 17:04:32 -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
Makefile.am Restore FreeBSD resource usage accounting 2021-02-19 22:34:33 -08:00
metaslab_impl.h Re-embed multilist_t storage 2021-06-10 10:42:31 -06:00
metaslab.h Only examine best metaslabs on each vdev 2020-12-16 14:40:05 -08:00
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 Replace ZFS on Linux references with OpenZFS 2020-10-08 20:10:13 -07:00
multilist.h Re-embed multilist_t storage 2021-06-10 10:42:31 -06:00
note.h Update build system and packaging 2018-05-29 16:00:33 -07:00
nvpair_impl.h OpenZFS 9580 - Add a hash-table on top of nvlist to speed-up operations 2018-07-30 11:30:03 -07:00
nvpair.h lib{efi,avl,share,tpool,zfs_core,zfsbootenv,zutil}: -fvisibility=hidden 2021-06-09 17:04:32 -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 QAT related bug fixes 2019-09-12 13:33:44 -07:00
range_tree.h Improve compatibility with C++ consumers 2020-06-06 12:54:04 -07:00
rrwlock.h Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
sa_impl.h Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
sa.h Extending FreeBSD UIO Struct 2021-01-20 21:27:30 -08:00
skein.h OpenZFS 4185 - add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R 2016-10-03 14:51:15 -07:00
spa_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 Remove refcount from spa_config_*() 2021-07-01 09:16:54 -06:00
spa_log_spacemap.h Log Spacemap Project 2019-07-16 10:11:49 -07:00
spa.h Optimize small random numbers generation 2021-06-22 17:35:23 -06:00
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_impl.h Fix typos in include/ 2019-08-30 09:53:15 -07:00
txg.h Optimize txg_kick() process (#12274) 2021-07-01 09:20:27 -06:00
u8_textprep_data.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
u8_textprep.h Throw const on some strings 2020-10-02 17:44:10 -07:00
uberblock_impl.h MMP interval and fail_intervals in uberblock 2019-03-21 12:47:57 -07:00
uberblock.h Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
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_disk.h Make struct vdev_disk_t be platform private 2020-06-16 11:43:33 -07:00
vdev_draid.h Fix various typos 2021-04-02 18:52:15 -07:00
vdev_file.h Add zfs_file_* interface, remove vnodes 2019-11-21 09:32:57 -08:00
vdev_impl.h Ratelimit deadman zevents as with delay zevents 2021-04-07 16:23:57 -07:00
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_impl.h Fix dRAID sequential resilver silent damage handling 2021-05-20 15:05:26 -07:00
vdev_raidz.h Clean up RAIDZ/DRAID ereport code 2021-03-19 16:22:10 -07:00
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
vdev.h Use a helper function to clarify gang block size 2021-03-26 11:19:35 -07:00
xvattr.h Linux 4.18 compat: inode timespec -> timespec64 2018-06-19 21:51:18 -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
zap.h fat zap should prefetch when iterating 2019-06-12 13:13:09 -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
zcp.h filesystem_limit/snapshot_limit is incorrectly enforced against root 2020-07-11 17:18:02 -07:00
zfeature.h Revert "zhack: Add 'feature disable' command" 2016-05-17 11:52:07 -07:00
zfs_acl.h Return an error code from zfs_acl_chmod_setattr 2019-11-01 10:19:11 -07:00
zfs_bootenv.h zfs label bootenv should store data as nvlist 2020-09-15 15:42:27 -07:00
zfs_context.h FreeBSD: fix compilation of FreeBSD world after 29274c9f6 2021-06-25 10:28:51 -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 Re-share zfsdev_getminor and zfs_onexit_fd_hold 2020-02-28 14:50:32 -08:00
zfs_fuid.h Replace sprintf()->snprintf() and strcpy()->strlcpy() 2020-06-07 11:42:12 -07:00
zfs_ioctl_impl.h libzfs: On FreeBSD, use MNT_NOWAIT with getfsstat 2021-06-08 07:36:43 -06:00
zfs_ioctl.h Move zfsdev_state_{init,destroy} to common code 2021-04-08 21:17:43 -07:00
zfs_onexit.h Remove deduplicated send/receive code 2020-04-23 10:06:57 -07:00
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 Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
zfs_rlock.h Add a "try" operation for range locks 2020-07-06 11:53:31 -07:00
zfs_sa.h Extending FreeBSD UIO Struct 2021-01-20 21:27:30 -08:00
zfs_stat.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
zfs_sysfs.h libzfs: convert to -fvisibility=hidden 2021-06-03 13:17:55 -07:00
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 Rename zfs_inode_update to zfs_znode_update_vfs 2021-02-09 11:17:29 -08:00
zil_impl.h make zil max block size tunable 2019-06-10 11:48:42 -07:00
zil.h Fix zfs_get_data access to files with wrong generation 2021-03-19 22:53:31 -07:00
zio_checksum.h libzfs: convert to -fvisibility=hidden 2021-06-03 13:17:55 -07:00
zio_compress.h Add zstd support to zfs 2020-08-20 10:30:06 -07:00
zio_crypt.h Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
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
zio.h include: move SPA_MINBLOCKSHIFT and zio_encrypt to sys/fs/zfs.h 2021-05-29 14:26:32 -07:00
zrlock.h OpenZFS 6328 - Fix cstyle errors in zfs codebase 2017-01-12 09:42:11 -08:00
zthr.h Introduce names for ZTHRs 2020-07-29 09:43:33 -07:00
zvol_impl.h Fix zfs_get_data access to files with wrong generation 2021-03-19 22:53:31 -07:00
zvol.h async zvol minor node creation interferes with receive 2020-02-03 09:33:14 -08:00