Date: Wed, 9 Sep 1998 13:05:42 +0200 From: Martin Cracauer <cracauer@cons.org> To: "Justin T. Gibbs" <gibbs@plutotech.com>, hackers@FreeBSD.ORG Subject: Re: Slow rewrite speed in Bonnie Message-ID: <19980909130542.A20353@cons.org> In-Reply-To: <199809051721.LAA15549@pluto.plutotech.com>; from Justin T. Gibbs on Sat, Sep 05, 1998 at 11:15:24AM -0600 References: <199809051721.LAA15549@pluto.plutotech.com>
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In <199809051721.LAA15549@pluto.plutotech.com>, Justin T. Gibbs wrote: > Can anyone explain this? > > # bonnie -s 1024 > Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done... > -------Sequential Output-------- ---Sequential Input-- --Random-- > -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- > Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU > 1024 18766 96.6 55157 89.3 8921 18.2 16883 97.4 62554 70.7 337.9 5.3 Maybe the system doesn't do readahead when it recognizes that the first/every read is immedeatly followed by a lseek? Is this a maschine with > 1024 MB RAM? Nice box, in any case :-) Martin -- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Martin Cracauer <cracauer@cons.org> http://www.cons.org/cracauer BSD User Group Hamburg, Germany http://www.bsdhh.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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