svn commit: r210541 - stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs

[Martin Matuska]

Author: mm
Date: Tue Jul 27 14:35:17 2010
New Revision: 210541
URL: http://svn.freebsd.org/changeset/base/210541

Log:
  MFC r210282:
  
  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)

Modified:
  stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/xen/xenpci/   (props changed)

Modified: stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c
==============================================================================
--- stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c	Tue Jul 27 14:32:51 2010	(r210540)
+++ stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c	Tue Jul 27 14:35:17 2010	(r210541)
@@ -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) */