Brian Behlendorf b0319c1faa OpenZFS 7143 - dbuf_read() creates unnecessary zio_root() for bonus buf ...

dbuf_read() creates a zio_root() to track and wait for all the
zio's that may happen as part of this call. However, if the blkptr_t
for this buffer is NULL or a hole, we will not create any more zio's,
so this zio_root() is unnecessary. This is always the case when calling
dbuf_read() on a bonus buffer, because it has no blkptr (it's part of
the containing dnode). For workloads that read a lot of bonus buffers
(e.g. file creation and removal), creating and destroying these
unnecessary zio's can decrease performance by around 3%.

The fix is to only create/destroy the zio_root() in dbuf_read() if
the blkptr is not NULL and not a hole.

Changes sponsored by Intel Corp.

Authored by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by:  Alex Zhuravlev <alexey.zhuravlev@intel.com>
Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue openzfs/openzfs#137
Closes #4803 
Closes #5382

2016-12-01 16:50:11 -07:00

..

abd.c

Fix incorrect operator in abd_alloc_sametype()

2016-12-01 16:45:16 -07:00

arc.c

DLPX-44812 integrate EP-220 large memory scalability

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

blkptr.c

DLPX-44812 integrate EP-220 large memory scalability

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

bplist.c

Change KM_PUSHPAGE -> KM_SLEEP

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

bpobj.c

Illumos 5810 - zdb should print details of bpobj

2015-05-11 15:10:24 -07:00

bptree.c

Illumos 5960, 5925

2016-01-08 15:08:19 -08:00

bqueue.c

Fix coverity defects: CID 147565-147567

2016-10-07 13:19:43 -07:00

dbuf_stats.c

OpenZFS 6950 - ARC should cache compressed data

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

dbuf.c

OpenZFS 7143 - dbuf_read() creates unnecessary zio_root() for bonus buf

2016-12-01 16:50:11 -07:00

ddt_zap.c

Change KM_PUSHPAGE -> KM_SLEEP

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

ddt.c

DLPX-44812 integrate EP-220 large memory scalability

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

dmu_diff.c

OpenZFS 6950 - ARC should cache compressed data

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

dmu_object.c

Implement large_dnode pool feature

2016-06-24 13:13:21 -07:00

dmu_objset.c

Export symbol dmu_objset_userobjspace_upgradable

2016-11-09 13:51:12 -08:00

dmu_send.c

DLPX-44812 integrate EP-220 large memory scalability

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

dmu_traverse.c

Add TASKQID_INVALID

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

dmu_tx.c

Fix coverity defects: CID 147575, 147577, 147578, 147579

2016-11-07 14:54:32 -08:00

dmu_zfetch.c

OpenZFS 6322 - ZFS indirect block predictive prefetch

2016-08-30 14:26:55 -07:00

dmu.c

DLPX-44812 integrate EP-220 large memory scalability

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

dnode_sync.c

Fix coverity defects: CID 147575, 147577, 147578, 147579

2016-11-07 14:54:32 -08:00

dnode.c

OpenZFS 6988 spa_sync() spends half its time in dmu_objset_do_userquota_updates

2016-10-07 09:45:13 -07:00

dsl_bookmark.c

OpenZFS 6314 - buffer overflow in dsl_dataset_name

2016-06-28 13:47:03 -07:00

dsl_dataset.c

OpenZFS 4185 - add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R

2016-10-03 14:51:15 -07:00

dsl_deadlist.c

Performance optimization of AVL tree comparator functions

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

dsl_deleg.c

Performance optimization of AVL tree comparator functions

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

dsl_destroy.c

OpenZFS 2605, 6980, 6902

2016-06-28 13:47:02 -07:00

dsl_dir.c

Fix coverity defects: 147658, 147652, 147651

2016-09-29 12:06:14 -07:00

dsl_pool.c

Fix file permissions

2016-10-08 14:57:56 -07:00

dsl_prop.c

Fix dsl_prop_get_all_dsl() memory leak

2016-11-02 12:34:10 -07:00

dsl_scan.c

DLPX-44812 integrate EP-220 large memory scalability

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

dsl_synctask.c

Illumos 4951 - ZFS administrative commands should use reserved space

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

dsl_userhold.c

OpenZFS 6314 - buffer overflow in dsl_dataset_name

2016-06-28 13:47:03 -07:00

edonr_zfs.c

DLPX-44812 integrate EP-220 large memory scalability

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

fm.c

Multipath autoreplace, control enclosure LEDs, event rate limiting

2016-10-19 12:55:59 -07:00

gzip.c

cstyle: Resolve C style issues

2013-12-18 16:46:35 -08:00

lz4.c

Change KM_PUSHPAGE -> KM_SLEEP

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

lzjb.c

Change KM_PUSHPAGE -> KM_SLEEP

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

Makefile.in

DLPX-44812 integrate EP-220 large memory scalability

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

metaslab.c

Fix coverity defects: CID 147575, 147577, 147578, 147579

2016-11-07 14:54:32 -08:00

multilist.c

Identify locks flagged by lockdep

2015-12-22 10:21:33 -08:00

pathname.c

Add pn_alloc()/pn_free() functions

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

policy.c

Fix NFS credential

2016-06-21 09:58:37 -07:00

range_tree.c

Performance optimization of AVL tree comparator functions

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

refcount.c

OpenZFS 7090 - zfs should throttle allocations

2016-10-13 17:59:18 -07:00

rrwlock.c

Illumos 5008 - lock contention (rrw_exit) while running a read only load

2015-07-06 09:34:13 -07:00

sa.c

Remove unused sa_update_from_cb()

2016-12-01 16:39:06 -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

Fix coverity defects: CID 147565-147567

2016-10-07 13:19:43 -07:00

spa_errlog.c

Illumos 4914 - zfs on-disk bookmark structure should be named *_phys_t

2014-08-06 14:48:41 -07:00

spa_history.c

Fix indefinite article

2016-08-11 11:23:49 -07:00

spa_misc.c

OpenZFS 7090 - zfs should throttle allocations

2016-10-13 17:59:18 -07:00

spa_stats.c

Explicit integer promotion for bit shift operations

2016-09-29 15:55:41 -07:00

spa.c

DLPX-44812 integrate EP-220 large memory scalability

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

space_map.c

Convert zio_buf_alloc() consumers

2016-11-30 16:18:20 -07:00

space_reftree.c

Performance optimization of AVL tree comparator functions

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

trace.c

OpenZFS 6531 - Provide mechanism to artificially limit disk performance

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

txg.c

txg visibility code should not execute under tc_open_lock

2016-07-27 14:11:13 -07:00

uberblock.c

Illumos 5347 - idle pool may run itself out of space

2015-07-14 10:35:21 -07:00

unique.c

Performance optimization of AVL tree comparator functions

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

vdev_cache.c

DLPX-44812 integrate EP-220 large memory scalability

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

vdev_disk.c

ABD page support to vdev_disk.c

2016-11-29 14:34:32 -08:00

vdev_file.c

DLPX-44812 integrate EP-220 large memory scalability

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

vdev_label.c

DLPX-44812 integrate EP-220 large memory scalability

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

vdev_mirror.c

DLPX-44812 integrate EP-220 large memory scalability

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

vdev_missing.c

Illumos #5244 - zio pipeline callers should explicitly invoke next stage

2015-04-30 15:07:47 -07:00

vdev_queue.c

DLPX-44812 integrate EP-220 large memory scalability

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

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

ABD raidz NEON support

2016-11-29 14:34:33 -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 Vectorized raidz

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

vdev_raidz_math_avx512f.c

ABD raidz avx512f support

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

vdev_raidz_math_impl.h

ABD raidz avx512f support

2016-11-29 14:34:33 -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

ABD raidz avx512f support

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

vdev_raidz_math.c

ABD raidz NEON support

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

vdev_raidz.c

ABD changes for vectorized RAIDZ

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

vdev_root.c

Illumos #3598

2013-10-31 14:58:04 -07:00

vdev.c

DLPX-44812 integrate EP-220 large memory scalability

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

zap_leaf.c

Illumos 5314 - Remove "dbuf phys" db->db_data pointer aliases in ZFS

2015-04-28 16:25:20 -07:00

zap_micro.c

Convert zio_buf_alloc() consumers

2016-11-30 16:18:20 -07:00

zap.c

Avoid undefined shift overflow in fzap_cursor_retrieve()

2016-09-29 15:55:41 -07:00

zfeature_common.c

Add support for user/group dnode accounting & quota

2016-10-07 09:45:13 -07:00

zfeature.c

Revert "zhack: Add 'feature disable' command"

2016-05-17 11:52:07 -07:00

zfs_acl.c

Fix unlinked file cannot do xattr operations

2016-11-04 10:46:40 -07:00

zfs_byteswap.c

Add linux kernel module support

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

zfs_ctldir.c

Enable .zfs/snapshot for 32-bit systems

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

zfs_debug.c

Add dbgmsg kstat

2015-09-04 16:08:14 -07:00

zfs_dir.c

Fix unlinked file cannot do xattr operations

2016-11-04 10:46:40 -07:00

zfs_fm.c

Fix coverity defects: CID 147626, 147628

2016-11-08 14:28:17 -08:00

zfs_fuid.c

Fix coverity defects

2016-09-21 18:09:00 -07:00

zfs_ioctl.c

Fix dsl_prop_get_all_dsl() memory leak

2016-11-02 12:34:10 -07:00

zfs_log.c

Fix unlinked file cannot do xattr operations

2016-11-04 10:46:40 -07:00

zfs_onexit.c

zfsdev_getminor() should check for invalid file handles

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

zfs_replay.c

Fix coverity defects

2016-09-21 18:09:00 -07:00

zfs_rlock.c

Performance optimization of AVL tree comparator functions

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

zfs_sa.c

Convert zio_buf_alloc() consumers

2016-11-30 16:18:20 -07:00

zfs_vfsops.c

Batch free zpl_posix_acl_release

2016-11-07 11:04:44 -08:00

zfs_vnops.c

Fix coverity defects: CID 147503

2016-11-10 08:50:32 -08:00

zfs_znode.c

Add support for O_TMPFILE

2016-11-04 10:46:40 -07:00

zil.c

DLPX-44812 integrate EP-220 large memory scalability

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

zio_checksum.c

DLPX-44812 integrate EP-220 large memory scalability

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

zio_compress.c

DLPX-44812 integrate EP-220 large memory scalability

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

zio_inject.c

Compile zio.h and zio_impl.h mutual include

2016-12-01 16:36:25 -07:00

zio.c

DLPX-44812 integrate EP-220 large memory scalability

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

zle.c

Update core ZFS code from build 121 to build 141.

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

zpl_ctldir.c

Linux 4.9 compat: iops->rename() wants flags

2016-10-20 09:39:09 -07:00

zpl_export.c

zfsctl: No need to sync ctldir inodes

2015-08-31 13:54:39 -07:00

zpl_file.c

Kernel 4.9 compat: file_operations->aio_fsync removal

2016-11-15 09:20:46 -08:00

zpl_inode.c

Linux 3.14 compat: assign inode->set_acl

2016-11-09 10:37:17 -08:00

zpl_super.c

Fix memleak in zpl_parse_options

2016-05-31 16:04:26 -07:00

zpl_xattr.c

Linux 3.14 compat: assign inode->set_acl

2016-11-09 10:37:17 -08:00

zrlock.c

Illumos 5812 - assertion failed in zrl_tryenter(): zr_owner==NULL

2015-04-30 14:43:40 -07:00

zvol.c

Fix 32-bit maximum volume size

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