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From: Pawel Jakub Dawidek <pjd@FreeBSD.org>
Date: Thu, 26 Apr 2007 17:07:50 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
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Cc: 
Subject: cvs commit: src/sys/contrib/opensolaris/uts/common/fs/zfs
	zfs_vnops.c
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pjd         2007-04-26 17:07:50 UTC

  FreeBSD src repository

  Modified files:
    sys/contrib/opensolaris/uts/common/fs/zfs zfs_vnops.c 
  Log:
  MFp4: Optimize mappedwrite() and mappedread() functions to write/read as much
  non-mapped data as possible at once and not page-by-page. Which this change we
  combain I/Os, but also saves many VM_OBJECT_UNLOCK()/VM_OBJECT_LOCK()
  operations.
  
  Simple 'fsx -l 33554432 -o 524288 -N 10000 /tank/fsx' test shows ~23%
  performance increase.
  
  Revision  Changes    Path
  1.11      +58 -31    src/sys/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c