svn commit: r210282 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs

[Martin Matuska]

Author: mm
Date: Tue Jul 20 05:22:14 2010
New Revision: 210282
URL: http://svn.freebsd.org/changeset/base/210282

Log:
  To improve latency, lower default vfs.zfs.vdev.max_pending from 35 to 10
  
  OpenSolaris onnv changeset (partial):	10801:e0bf032e8673
  
  Approved by:	pjd, delphij (mentor)
  Obtained from:	OpenSolaris (Bug ID 6891731)
  MFC after:	1 week

Modified:
  head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c

Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c	Tue Jul 20 05:16:10 2010	(r210281)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c	Tue Jul 20 05:22:14 2010	(r210282)
@@ -38,7 +38,7 @@
  * of i/os pending to each device (before it starts ramping up to
  * max_pending).
  */
-int zfs_vdev_max_pending = 35;
+int zfs_vdev_max_pending = 10;
 int zfs_vdev_min_pending = 4;
 
 /* deadline = pri + (LBOLT >> time_shift) */