Date: Thu, 23 Oct 2008 22:16:04 +0200 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-performance@freebsd.org Subject: Re: Disk Throughput test Message-ID: <gdqm2b$3k9$1@ger.gmane.org> In-Reply-To: <490097CC.9010802@opnet.com> References: <490097CC.9010802@opnet.com>
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[-- Attachment #1 --] Stephen Sanders wrote: > FreeBSD 6.3 > Dual Quad Core Xeon 5450@3Ghz FreeBSD 6.3 isn't very suited for your CPU. If your workload isn't completely CPU bound (i.e. if isn't Seti@Home), you will not only not make use of all 8 CPU cores but will probably get worse performance with 8 CPUs than with 2 CPUs. Upgrade to at least 7.0 and you'll probably need 7.1-BETA2 to maximally use your CPU. But if you don't have much IO contention it's probably not related to your problem. > 16GB RAM You're using the AMD64 version, right? > 3Ware 9650SE-ML / 256MB cache > 14 Seagate 750GB/7200RPM/ST375033ONS SATA drives Which RAID mode? What is the total size of your array? > We have an application that is streaming data to disk at the maximum > rate the controller can sustain. The controller should be able to > develop something on the order of 600MB/s but we're only getting 450MB/s. Can you use something like bonnie++ to test your configuration? [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkkA24QACgkQldnAQVacBci2pwCg79uZSULbVFQ1Cdsf45WpHuQk IXIAoNiD9TS20h2pdD9E5HNE3s3zH9xl =0g1w -----END PGP SIGNATURE-----
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