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Disable zio_dva_throttle_enabled by default 

Until it can be determined definitively that a performance
regression wasn't introduced accidentally by 3dfb57a this
functionality is being disabled by default.  It can be re-
enabled by setting zio_dva_throttle_enabled=1.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #5335 
Issue #5289
This commit is contained in:
Brian Behlendorf 2016-10-26 09:13:43 -07:00 committed by GitHub
parent e4010f2719
commit 76a87a902e
2 changed files with 2 additions and 2 deletions
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2
man/man5/zfs-module-parameters.5
View File

@ -1861,7 +1861,7 @@ Default value: \fB30,000\fR.
Throttle block allocations in the ZIO pipeline. This allows for Throttle block allocations in the ZIO pipeline. This allows for
dynamic allocation distribution when devices are imbalanced. dynamic allocation distribution when devices are imbalanced.
.sp .sp
Default value: \fB1\fR. Default value: \fB0\fR.
.RE .RE
.sp .sp

2
module/zfs/zio.c
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@ -56,7 +56,7 @@ const char *zio_type_name[ZIO_TYPES] = {
"z_null", "z_rd", "z_wr", "z_fr", "z_cl", "z_ioctl" "z_null", "z_rd", "z_wr", "z_fr", "z_cl", "z_ioctl"
}; };
int zio_dva_throttle_enabled = B_TRUE; int zio_dva_throttle_enabled = B_FALSE;
/* /*
* ========================================================================== * ==========================================================================