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Tim Chase d33931a83a Write issue taskq shouldn't be dynamic

This is as much an upstream compatibility as it's a bit of a performance
gain.

The illumos taskq implemention doesn't allow a TASKQ_THREADS_CPU_PCT type
to be dynamic and in fact enforces as much with an ASSERT.

As to performance, if this taskq is dynamic, it can cause excessive
contention on tq_lock as the threads are created and destroyed because it
can see bursts of many thousands of tasks in a short time, particularly
in heavy high-concurrency zvol write workloads.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tim Chase <tim@chase2k.com>
Closes #5236

2016-10-10 15:19:14 -07:00

avl

Fix uninitialized variable in avl_add()

2016-07-25 14:21:34 -07:00

icp

Porting over some ICP code that was missed in #4760

2016-10-10 11:34:57 -07:00

nvpair

Fix file permissions

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

unicode

Build user-space with different gcc optimization levels