Date: Sun, 13 Nov 2005 21:18:16 +0300 From: Tarasov Alexey <lexa@wincmd.ru> To: Kris Kennaway <kris@obsecurity.org>, freebsd-stable@freebsd.org Subject: Re: Reduced hard disk perfomance on 5.4 with SMP Message-ID: <43778368.1000105@wincmd.ru> In-Reply-To: <20051112200627.GD56633@xor.obsecurity.org> References: <4376476B.6090703@wincmd.ru> <20051112200627.GD56633@xor.obsecurity.org>
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Kris Kennaway wrote: > > VFS was Giant-locked on 5.4, and there is contention between multiple > processes (e.g. tar and bufdaemon). Try 6.0 instead. > I've updated server to RELENG_6_0. Results of hard disk test: > /usr/local/bin/bonnie > File './Bonnie.37454', size: 104857600 > Writing with putc()...done > Rewriting...done > Writing intelligently...done > Reading with getc()...done > Reading intelligently...done > 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 > 100 3733 3.8 3112 1.0 2691 1.5 105299 99.9 1451514 > 100.0 61287.7 180.5 Compare with my home computer results: > bonnie > File './Bonnie.36180', size: 104857600 > Writing with putc()...done > Rewriting...done > Writing intelligently...done > Reading with getc()...done > Reading intelligently...done > 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 > 100 47381 32.2 48026 9.2 44852 8.7 83843 68.5 1184280 78.9 > 84180.4 82.5 -- Best regards, Tarasov Alexey.
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