Date: Thu, 18 May 2006 12:14:45 +1200 From: Mark Kirkwood <markir@paradise.net.nz> To: freebsd-stable@freebsd.org Subject: Re: Sequantial IO Performance improvement in 6.1-STABLE Message-ID: <446BBC75.6040407@paradise.net.nz> In-Reply-To: <446AC35C.2090304@paradise.net.nz> References: <446AC35C.2090304@paradise.net.nz>
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Mark Kirkwood wrote: > I recently upgraded my FreeBSD machines from 6.0R to 6.1-STABLE > > I noticed a pleasant surprise - improved disk IO! > > In 6.0R best sequential throughput I ever saw was 170 MB/s (32k block > size reads on an 4G file). In 6.1-STABLE I'm seeing 190 Mb/s (32k block > size reads on an 4G file). > Would have been even better if I'd spelled "sequential" correctly in the subject :-(... I'm also seeing sequential write speed increasing from 120Mb/s to 140Mb/s. I did wonder if this increased IO throughput is what is triggering the posts about data corruption in 6.1 - i.e. more throughput means more heat to dissipate! Cheers Mark
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