Date: Fri, 5 May 2000 15:13:06 +1000 (EST) From: Carl Makin <carl@xena.aipo.gov.au> To: freebsd-stable@FreeBSD.ORG Subject: AMI MegaRAID performance (was HPDA/DAC960PL errors) Message-ID: <Pine.BSF.4.21.0005051502090.65693-100000@newton.aipo.gov.au> In-Reply-To: <200005041805.LAA00975@mass.cdrom.com>
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On Thu, 4 May 2000, Mike Smith wrote:
> That's OK. At this point in time, I don't have any outstanding reports
> of problems with the MegaRAID driver in 4-stable. The 4-release version
> is capable of locking up the adapter, however.
Here is the rawio stats for a 3.4-STABLE box running a Dell PERC2/SC card
(I think it's an OEM AMI MegaRAID Express 300).
Random read Sequential read Random write Sequential write
ID K/sec /sec K/sec /sec K/sec /sec K/sec /sec
PERC2/SC 5533.6 344 19268.6 1176 881.6 54 1034.6 63
This is on a Dell PowerEdge 4300, pIII/450 connected via a single bus to 8
x 18Gb LVD disks (1 x hot spare, the rest in 1 array).
This is using the amr-stable patch produced by Mike in December last year,
with the lockup fix backported from 4.0-STABLE (heh, 2 lines, wasn't
hard).
We're about to throw this into production.
Carl.
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