Garrett D'Amore a38718a63d Illumos #734: Use taskq_dispatch_ent() interface ... It has been observed that some of the hottest locks are those of the zio taskqs. Contention on these locks can limit the rate at which zios are dispatched which limits performance. This upstream change from Illumos uses new interface to the taskqs which allow them to utilize a prealloc'ed taskq_ent_t. This removes the need to perform an allocation at dispatch time while holding the contended lock. This has the effect of improving system performance. Reviewed by: Albert Lee <trisk@nexenta.com> Reviewed by: Richard Lowe <richlowe@richlowe.net> Reviewed by: Alexey Zaytsev <alexey.zaytsev@nexenta.com> Reviewed by: Jason Brian King <jason.brian.king@gmail.com> Reviewed by: George Wilson <gwilson@zfsmail.com> Reviewed by: Adam Leventhal <ahl@delphix.com> Approved by: Gordon Ross <gwr@nexenta.com> References to Illumos issue: https://www.illumos.org/issues/734 Ported-by: Prakash Surya <surya1@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #482		2011-12-14 09:19:30 -08:00
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fm	Simplify BDI integration	2011-11-08 10:19:03 -08:00
fs	Implement SA based xattrs	2011-11-28 15:45:51 -08:00
arc.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
avl_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
avl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
bplist.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
bpobj.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dbuf.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
ddt.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dmu_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dmu_objset.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dmu_traverse.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dmu_tx.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dmu_zfetch.h	Add missing ZFS tunables	2011-05-04 10:02:37 -07:00
dmu.h	Illumos #755: dmu_recv_stream builds incomplete guid_to_ds_map	2011-10-18 11:18:14 -07:00
dnode.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dsl_dataset.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dsl_deadlist.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dsl_deleg.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dsl_dir.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dsl_pool.h	Prototype/structure update for Linux	2011-02-10 09:27:21 -08:00
dsl_prop.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dsl_scan.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dsl_synctask.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
efi_partition.h	Make libefi-created GPT compatible with gptfdisk	2011-09-26 09:44:43 -07:00
Makefile.am	Add xvattr support	2011-03-02 11:43:50 -08:00
Makefile.in	Simplify BDI integration	2011-11-08 10:19:03 -08:00
metaslab_impl.h	Illumos #1051: zfs should handle imbalanced luns	2011-08-01 12:09:11 -07:00
metaslab.h	Illumos #1051: zfs should handle imbalanced luns	2011-08-01 12:09:11 -07:00
nvpair_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
nvpair.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
refcount.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
rrwlock.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
sa_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
sa.h	Implement SA based xattrs	2011-11-28 15:45:51 -08:00
spa_boot.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
spa_impl.h	Illumos #1051: zfs should handle imbalanced luns	2011-08-01 12:09:11 -07:00
spa.h	Illumos #1051: zfs should handle imbalanced luns	2011-08-01 12:09:11 -07:00
space_map.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
txg_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
txg.h	Add API to wait for pending commit callbacks	2011-02-16 11:20:06 -08:00
u8_textprep_data.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
u8_textprep.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
uberblock_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
uberblock.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
uio_impl.h	Add basic uio support	2011-02-10 09:21:43 -08:00
unique.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
uuid.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
vdev_disk.h	Linux 2.6.x compat, blkdev_compat.h	2011-02-23 12:29:38 -08:00
vdev_file.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
vdev_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
vdev.h	Add missing ZFS tunables	2011-05-04 10:02:37 -07:00
xvattr.h	Add xvattr support	2011-03-02 11:43:50 -08:00
zap_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zap_leaf.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zap.h	Export symbols for the full ZAP API	2011-09-27 16:12:36 -07:00
zfs_acl.h	Add xvattr support	2011-03-02 11:43:50 -08:00
zfs_context.h	Illumos #734: Use taskq_dispatch_ent() interface	2011-12-14 09:19:30 -08:00
zfs_debug.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zfs_dir.h	Prototype/structure update for Linux	2011-02-10 09:27:21 -08:00
zfs_fuid.h	Prototype/structure update for Linux	2011-02-10 09:27:21 -08:00
zfs_ioctl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zfs_onexit.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zfs_rlock.h	Range lock performance improvements	2011-03-08 12:44:06 -08:00
zfs_sa.h	Implement SA based xattrs	2011-11-28 15:45:51 -08:00
zfs_stat.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zfs_vfsops.h	Implement SA based xattrs	2011-11-28 15:45:51 -08:00
zfs_vnops.h	Cleanup mmap(2) writes	2011-08-02 10:34:55 -07:00
zfs_znode.h	Implement SA based xattrs	2011-11-28 15:45:51 -08:00
zil_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zil.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zio_checksum.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zio_compress.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zio_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zio.h	Illumos #734: Use taskq_dispatch_ent() interface	2011-12-14 09:19:30 -08:00
zpl.h	Linux compat 2.6.39: mount_nodev()	2011-07-01 13:36:39 -07:00
zrlock.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zvol.h	Linux 2.6.x compat, blkdev_compat.h	2011-02-23 12:29:38 -08:00