Date: Sat, 06 Nov 2010 15:00:07 -0400 From: "Mikhail T." <mi+thunw@aldan.algebra.com> To: Julian Elischer <julian@freebsd.org> Cc: fs@freebsd.org Subject: Re: iozone-ing an SSD (Re: Using an SSD "disk" for /) Message-ID: <4CD5A5B7.4040006@aldan.algebra.com> In-Reply-To: <4CD48F81.1080201@aldan.algebra.com> References: <4CD04AEC.8040607@aldan.algebra.com> <4CD051A9.7090200@freebsd.org> <4CD0660E.2000102@aldan.algebra.com> <4CD06C4B.80100@freebsd.org> <4CD0895A.5030402@aldan.algebra.com> <4CD09830.3030400@freebsd.org> <4CD48F81.1080201@aldan.algebra.com>
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On 11/5/2010 7:13 PM, Mikhail T. wrote: > The results can be found in 4 HTML files found at: > http://aldan.algebra.com/~mi/io/ (The original iozone-created Excel > files are there too.) I added some more iozone runs, as well as those of rawio. These are much fewer (as file-system parameters don't affect rawio) and easier to interpret: * It makes no difference to the SSD, whether your access is random or sequential * SSD clearly beats the HD in rawrite, although, at "only" 88Mb/sec, the results are far from the marketing... * SSD connected to plain SATA port strongly beats the same SSD connected to the fancy SAS controller (mpt) Yours, -mi
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