Re: Performance with 2 AMD/Opteron 2.6Ghz and 8gig

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От Jim C. Nasby
Тема Re: Performance with 2 AMD/Opteron 2.6Ghz and 8gig
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Msg-id 20060809210903.GS40481@pervasive.com
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Ответ на Re: Performance with 2 AMD/Opteron 2.6Ghz and 8gig  ("Steinar H. Gunderson" <sgunderson@bigfoot.com>)
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On Mon, Aug 07, 2006 at 10:20:02PM +0200, Steinar H. Gunderson wrote:
> On Mon, Aug 07, 2006 at 04:02:52PM -0400, Alex Turner wrote:
> > Although I for one have yet to see a controller that actualy does this (I
> > believe software RAID on linux doesn't either).
>
> Linux' software RAID does. See earlier threads for demonstrations.

The real question: will it balance within a single thread?

Cheaper raid setups will balance individual requests between devices,
but good ones should be able to service a single request from both
devices (assuming it's reading more than whatever the stripe size is).
--
Jim C. Nasby, Sr. Engineering Consultant      jnasby@pervasive.com
Pervasive Software      http://pervasive.com    work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf       cell: 512-569-9461

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