From owner-cvs-all  Thu Feb 18 11:58:23 1999
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From: Matt Dillon <dillon@FreeBSD.org>
Date: Thu, 18 Feb 1999 11:57:33 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/vm swap_pager.c
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dillon      1999/02/18 11:57:33 PST

  Modified files:
    sys/vm               swap_pager.c 
  Log:
      Limit number of simultanious asynchronous swap pager I/Os that can
      be in progress at any given moment.
  
      Add two swap tuneables to sysctl:
  
  	vm.swap_async_max: 4
  	vm.swap_cluster_max: 16
  
      Recommended values are a cluster size of 8 or 16 pages.  async_max is
      about right for 1-4 swap devices.  Reduce to 2 if swap is eating too much
      bandwidth, or even 1 if swap is both eating too much bandwidth and sitting
      on a slow network (10BaseT).
  
      The defaults work well across a broad range of configurations and should
      normally be left alone.
  
  Revision  Changes    Path
  1.114     +109 -13   src/sys/vm/swap_pager.c


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