Date: Mon, 9 Jun 2008 15:11:17 -0700 From: Chuck Swiger <cswiger@mac.com> To: Adam Bayless <adam@baylessfamily.org> Cc: Free BSD Questions list <freebsd-questions@freebsd.org> Subject: Re: Troubleshooting a 3Ware 9550SX under 6.3 Message-ID: <740A26DF-8B8A-4FC7-A019-21EC12C38DDE@mac.com> In-Reply-To: <484DAA11.1070909@baylessfamily.org> References: <484D9C13.9090607@baylessfamily.org> <E6CED381-4A26-455B-9559-B7F974558914@mac.com> <484DAA11.1070909@baylessfamily.org>
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On Jun 9, 2008, at 3:09 PM, Adam Bayless wrote: >> Caching is off; that will kill performance especially for small >> transactions. If you've got battery backup for this system, >> consider enabling the onboard cache...? > > Chuck, that made an immediate and huge difference: > > # tw_cli set cache c0 u0 on > # dd if=/dev/zero of=testfile > 5649235+0 records in > 5649234+0 records out > 2892407808 bytes transferred in 40.800142 secs (70892102 bytes/sec) > > I had no idea having the cache on would be such a night and day > difference. > > I'm off to order the battery backup card. > > Thanks!!! Excellent! I'm glad that resolved your performance issue, and you're most welcome.... -- -Chuck
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