Date: Wed, 15 Mar 2000 15:29:08 -0800 (PST) From: fbsd-dave <fbsddave@mrcaffeine.com> To: Mark Smith <msmith@beta.tricity.wsu.edu> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: vinum stats and question Message-ID: <Pine.BSF.4.21.0003151426150.5782-100000@boris.netgate.net> In-Reply-To: <200003151658.IAA31925@beta.tricity.wsu.edu>
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Use rawio to test, at least for vinum storage. Bonnie tests through system buffers and fibs. (though usually it's optimistic) -- from rawio(1)'s manpage -- rawio resembles bonnie in some of the things it does. It differs strong- ly from bonnie by using a raw disk device, which bypasses buffer cache. As a result, some of the tests that bonnie performs are meaningless, for example character I/O. --- Build it here: /usr/ports/benchmarks/rawio Still, those numbers do look strange. Can we see the output from "vinum printconfig"? Dave On Wed, 15 Mar 2000, Mark Smith wrote: > Greetings, > > Here's some Bonnie stats from my 3.4R machine. Plase read da1 and da2 > instead of sd1 and sd2. I benched the individual drives right after > installing 3.4 and was still thinking older device names. <G> Anway, > sd1 and sd2 are the drives striped together to get testc. > > Could somebody please explain why the sequentional block output is sooo > much slower on the striped partion than the individual sd1 and sd2 > drives? > > #Bonnie -s 200 > > /disk1 /dev/sd1 > -------Sequential Output-------- ---Sequential Input-- --Random-- > -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- > MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU > 200 7510 93.4 8428 21.5 2856 15.8 7485 93.2 11164 27.4 227.0 6.3 > > /disk2 /dev/sd2 > -------Sequential Output-------- ---Sequential Input-- --Random-- > -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- > MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU > 200 7546 92.4 8403 21.6 2871 15.9 7512 93.0 11375 29.6 199.9 5.9 > > /testc /dev/vinum/testc > -------Sequential Output-------- ---Sequential Input-- --Random-- > -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- > MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU > 200 7881 96.3 2886 25.9 5765 31.7 6297 77.0 16289 46.5 315.8 9.6 > -- > Thanks! > Mark To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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