From owner-cvs-all  Thu Apr 29 11:15:30 1999
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From: Alan Cox <alc@FreeBSD.org>
Date: Thu, 29 Apr 1999 11:15:28 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/kern vfs_bio.c
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alc         1999/04/29 11:15:28 PDT

  Modified files:
    sys/kern             vfs_bio.c 
  Log:
  Address a performance problem in getnewbuf:
  	In heavy-writing situations, QUEUE_LRU can contain a large number
  	of DELWRI buffers at its head.  These buffers must be moved
  	to the tail if they cannot be written async in order to reduce
  	the scanning time required to skip past these buffers in later
  	getnewbuf() calls.
  
  Submitted by:	Matthew Dillon <dillon@apollo.backplane.com>
  
  Revision  Changes    Path
  1.207     +33 -5     src/sys/kern/vfs_bio.c


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