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Evenly distribute the taskq threads across available CPUs

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The problem is described in commit aeeb4e0c0a.
However, instead of disabling the binding to CPU altogether we just keep the
last CPU index across calls to taskq_create() and thus achieve even
distribution of the taskq threads across all available CPUs.

The implementation based on assumption that task queues initialization
performed in serial manner.

Signed-off-by: Andrey Vesnovaty <andrey.vesnovaty@gmail.com>
Signed-off-by: Andrey Vesnovaty <andreyv@infinidat.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #336
This commit is contained in:
Andrey Vesnovaty
2013-08-28 05:09:25 +03:00
committed by Brian Behlendorf
parent ae16ed992b
commit 703371d8c7
2 changed files with 21 additions and 0 deletions
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man/man5/spl-module-parameters.5
+12
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@@ -124,3 +124,15 @@ Spin a maximum of N times to acquire lock
.sp
.ne -4
Default value: \fB0\fR.
.RE
.sp
.ne 2
.na
\fBspl_taskq_thread_bind\fR (int)
.ad
.RS 12n
Bind taskq thread to CPU
.sp
Default value: \fB0\fR.
.RE