Date: Wed, 01 Mar 2006 15:08:59 -0500 From: Mike Tancsa <mike@sentex.net> To: Sven Willenberger <sven@dmv.com> Cc: freebsd-stable@freebsd.org Subject: Re: LSI Megaraid (amr) performance woes Message-ID: <6.2.3.4.0.20060301150537.09d7b700@64.7.153.2> In-Reply-To: <1141240258.1013.19.camel@lanshark.dmv.com> References: <1140727266.23965.43.camel@lanshark.dmv.com> <20060223205342.GA91253@xor.obsecurity.org> <1141240258.1013.19.camel@lanshark.dmv.com>
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At 02:10 PM 01/03/2006, Sven Willenberger wrote:
>I cvsupped a 6.1 prerelease and found no performance improvements. I did
>some further tests and the performance issues seem very specific to the
>mirroring aspect of the raid:
I am not familiar with the LSI cards, but with older 3ware and the
ARECA cards, the raid sets when in any sort of redundancy mode must
initialize in the background before normal use. Until that is
complete, performance is seriously slow. Is the LSI doing that, and
perhaps just not telling you ?
---Mike
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