Date: Mon, 04 Feb 2008 10:12:34 -0700 From: Scott Long <scottl@samsco.org> To: Marko Lerota <mlerota@iskon.hr> Cc: freebsd-scsi@freebsd.org Subject: Re: LSI 1064E poor performance Message-ID: <47A74782.5070408@samsco.org> In-Reply-To: <863as8znaf.fsf@zid.claresco.hr> References: <863as8znaf.fsf@zid.claresco.hr>
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Marko Lerota wrote: > I have new IBM X3250 with onboard LSI 1064E SAS/RAID controller. > > when I do > dd if=/dev/da0 of=/file.dd bs=1m count=1000 > > I get 10MBps transfer rate and tps 99 from iostat > > when raid is not configured on onboard controller but enabled, > the tps value goes to 200 but it's to slow also. What should I do? > > The OS version is 6.3 Release i386 GENERIC > > I tried with 7.0RC1 and the tps goes to 500 when raid is not > configured. So it's better but not enough. > Go to the BIOS and turn on the cache for the array. Scott
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