Date: Wed, 04 Sep 2002 10:01:14 -0400 (EDT) From: John Baldwin <jhb@FreeBSD.org> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: peter@FreeBSD.ORG, alpha@FreeBSD.ORG Subject: Re: FYI: Buffer cache fix gave major speedup Message-ID: <XFMail.20020904100114.jhb@FreeBSD.org> In-Reply-To: <15734.3540.941843.110159@grasshopper.cs.duke.edu>
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On 04-Sep-2002 Andrew Gallatin wrote: > > John Baldwin writes: > > On the DS20 I have here, Peter's fix to basically enable the buffer cache > > gave me about a 38% performance increase for a buildworld -j 2 on current: > > > > Before: > > -------------------------------------- > > build started at 15:11:08 on 08/28/02 > > build finished at 18:43:05 on 08/28/02 > > -------------------------------------- > > Which is a total time of 3:31:57 > > > > After: > > -------------------------------------- > > build started at 22:41:31 on 09/03/02 > > build finished at 00:51:46 on 09/04/02 > > -------------------------------------- > > Which is a total time of 2:10:15 > > > > If this bug exists in 4.x we should really fix it there as well. > > > > Are you talking about btoc()? I think stable is immune. A simple > test shows the buffer cache is working just fine there. Ah, right. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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