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Disable arc_p adapt dampener by default

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It's unclear why adjustments to arc_p need to be dampened as they are in
arc_adjust. With that said, it's removal significantly improves the arc's
ability to "warm up" to a given workload. Thus, I'm disabling by default
until its usefulness is better understood.

Signed-off-by: Prakash Surya <surya1@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #2110
This commit is contained in:
Prakash Surya
2014-01-03 10:36:26 -08:00
committed by Brian Behlendorf
parent f521ce1b9c
commit 624227854e
2 changed files with 23 additions and 2 deletions
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man/man5/zfs-module-parameters.5
+11
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@@ -304,6 +304,17 @@ Disable aggressive arc_p growth
Use \fB1\fR for yes (default) and \fB0\fR to disable.
.RE
.sp
.ne 2
.na
\fBzfs_arc_p_dampener_disable\fR (int)
.ad
.RS 12n
Disable arc_p adapt dampener
.sp
Use \fB1\fR for yes (default) and \fB0\fR to disable.
.RE
.sp
.ne 2
.na