From owner-cvs-all  Sat Mar 13 21:18: 2 1999
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From: Kenneth Merry <ken@FreeBSD.org>
Date: Sat, 13 Mar 1999 21:15:39 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/cam cam_xpt.c
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ken         1999/03/13 21:15:39 PST

  Modified files:
    sys/cam              cam_xpt.c 
  Log:
  Disable tagged queueing for the IBM DCAS drives.  These drives have poor
  write performance when tagged queueing is enabled.
  
  Although the PR was submitted for the 4 gig version of this drive, the
  assumption is that the 2 gig version has the same problem.  Therefore
  tagged queueing is disabled for both.
  
  Also, update the comment for the Western Digital Enterprise drives to note
  that the best performance for those drives is achieved when tagged queueing
  is disabled and write caching is enabled.
  
  PR:		kern/10398
  Submitted by:	Hideaki Okada <hokada@isl.melco.co.jp>
  
  Revision  Changes    Path
  1.49      +30 -1     src/sys/cam/cam_xpt.c


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