Date: Fri, 20 Feb 2004 14:27:33 -0500 From: Charles Swiger <cswiger@mac.com> To: mi+mx@aldan.algebra.com Cc: performance@FreeBSD.ORG Subject: Re: strange performance dip shown by iozone Message-ID: <D4B74A4C-63DA-11D8-B35A-003065ABFD92@mac.com> In-Reply-To: <200402201147.03606@misha-mx.virtual-estates.net> References: <200402181729.06202@misha-mx.virtual-estates.net> <20040220072258.GA17579@VARK.homeunix.com> <200402201147.03606@misha-mx.virtual-estates.net>
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On Feb 20, 2004, at 11:47 AM, mi+mx@aldan.algebra.com wrote: > Also, is the RAID5 writing speed supposed to be _so much_ worse, than > that of a single disk? it's normal for RAID-5 write performance to be slower than that of a bare drive. RAID filesystems involve tradeoffs between cost, performance, and reliability. RAID-5 maximizes cost and reliability at the expense of performance.... -- -Chuck
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