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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]Re: [tlug] SATA software RAID or SAS hardware RAID?
- Date: Sat, 16 Dec 2006 18:53:50 +0900
- From: "Stephen J. Turnbull" <stephen@example.com>
- Subject: Re: [tlug] SATA software RAID or SAS hardware RAID?
- References: <9342fdf30612082004y2b0cab57h57a3e0f32f720f77@example.com> <457A8FEB.7060207@example.com> <Pine.NEB.4.64.0612101645500.8433@example.com> <200612141230.53315.jq@example.com> <Pine.NEB.4.64.0612151010150.21179@example.com> <874prxsv2h.fsf@example.com> <45821CB7.3000100@example.com> <87zm9pr3fb.fsf@example.com> <458265E3.50305@example.com>
Edward Middleton writes: > You might get more of a speed increase by reformulating your problems so > that it is more distributable. You're still missing the point. The computation is perfectly distributable; each subtask is entirely independent of all the others. The bad performance is entirely that 4 CPUs sharing two memory banks spent more time *waiting* for each *single* task to report than it took 1 CPU to do 1000 such tasks.
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