Date: Wed, 05 Mar 2008 23:23:51 +0300 From: "Andrew L. Davydov" <davydov@itass.su> To: alan bryan <alan.bryan@yahoo.com> Cc: freebsd-stable@freebsd.org Subject: Re: 7.0-Release and 3ware 9550SXU w/BBU - horrible write performance Message-ID: <47CF0157.5050408@itass.su> In-Reply-To: <915419.88748.qm@web50505.mail.re2.yahoo.com> References: <915419.88748.qm@web50505.mail.re2.yahoo.com>
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alan bryan пишет: > Hi, > > I've got a new server with a 3ware 9550SXU with the > Battery. I am using FreeBSD 7.0-Release (tried both > 4BSD and ULE) using AMD64 and the 3ware performance > for writes is just plain horrible. Something is > obviously wrong but I'm not sure what. > > > Hi! Try to add the following variable in your /etc/sysctl.conf #Disk TWA vfs.hirunningspace=5242880 vfs.read_max=256 reboot or execute /etc/rc.d/sysctl start and try your test again My results 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 80443 80.6 104481 45.2 43386 19.1 84372 80.4 507936 98.6 19422.9 192.7 Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU 100 51012 46.6 103153 38.0 27272 7.4 116210 98.7 989831 99.3 72496.6 183.3 -- Best regards Mr Andrew L. Davydov +7 985 773 8819
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