Date: Tue, 20 Jul 2010 05:22:14 +0000 (UTC) From: Martin Matuska <mm@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r210282 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <201007200522.o6K5MEC2096560@svn.freebsd.org>
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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) */
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