From owner-cvs-all  Mon Dec 13  9:34:48 1999
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From: Matt Dillon <dillon@FreeBSD.org>
Date: Mon, 13 Dec 1999 09:34:45 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/nfs nfs_serv.c
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dillon      1999/12/13 09:34:45 PST

  Modified files:
    sys/nfs              nfs_serv.c 
  Log:
      Add a readahead heuristic to the NFS server side code.  While the server
      cannot unilaterally pass data to a client it can reduce the physical
      disk transaction overhead by reading larger blocks.  This results in
      better pipelining of requests/responses over the network and an almost
      100% increase in cpu efficiency on the server.  On a 100BaseTX network
      NFS read performance increases from 8.5 MBytes/sec to 10 MB/sec (maxed
      out), and cpu efficiency increases from 72% idle to 80% idle on the server.
  
  Reviewed by:	Alfred Perlstein <bright@wintelcom.net>
  
  Revision  Changes    Path
  1.90      +78 -2     src/sys/nfs/nfs_serv.c



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