freebsd-dev/include
Brian Behlendorf 31f2b5abdf Remove TSD zfs_fsyncer_key
It's my understanding that the zfs_fsyncer_key TSD was added as
a performance omtimization to reduce contention on the zl_lock
from zil_commit().  This issue manifested itself as very long
(100+ms) fsync() system call times for fsync() heavy workloads.

However, under Linux I'm not seeing the same contention that
was originally described.  Therefore, I'm removing this code
in order to ween ourselves off any dependence on TSD.  If the
original performance issue reappears on Linux we can revisit
fixing it without resorting to TSD.

This just leaves one small ZFS TSD consumer.  If it can be
cleanly removed from the code we'll be able to shed the SPL
TSD implementation entirely.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes zfsonlinux/spl#174
2012-12-19 09:08:01 -08:00
..
linux Improve AF hard disk detection 2012-11-15 11:06:14 -08:00
sys Remove TSD zfs_fsyncer_key 2012-12-19 09:08:01 -08:00
libnvpair.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
libuutil_common.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
libuutil_impl.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
libuutil.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
libzfs_impl.h Illumos #1644, #1645, #1646, #1647, #1708 2012-07-31 09:25:30 -07:00
libzfs.h Allow 'zpool replace' to use short device names 2012-10-22 08:45:58 -07:00
Makefile.am Add the release component to headers 2012-01-18 12:19:47 -08:00
zfs_comutil.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
zfs_deleg.h Illumos #278: get rid zfs of python and pyzfs dependencies 2011-08-01 12:09:36 -07:00
zfs_fletcher.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
zfs_namecheck.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
zfs_prop.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
zpios-ctl.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
zpios-internal.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00