Date: Tue, 17 Oct 2000 20:03:18 +0200 From: Gerhard Sittig <Gerhard.Sittig@gmx.net> To: freebsd-stable@FreeBSD.ORG Subject: Re: PERC2 RAID support in 4.1-STABLE Message-ID: <20001017200318.E25237@speedy.gsinet> In-Reply-To: <5.0.0.25.0.20001017090048.06f1eb60@marble.sentex.ca>; from mike@sentex.net on Tue, Oct 17, 2000 at 09:09:28AM -0400 References: <5.0.0.25.0.20001012111508.05f2c0b0@marble.sentex.ca> <Pine.BSF.4.21.0010171339330.44225-100000@plato.salford.ac. uk> <5.0.0.25.0.20001017090048.06f1eb60@marble.sentex.ca>
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On Tue, Oct 17, 2000 at 09:09 -0400, Mike Tancsa wrote:
> At 01:40 PM 10/17/00 +0100, Mark Powell wrote:
> >
> >Hmmm. Get's a bit confusing with the model and series numbers.
> >The Enterprise 1500 is series 467. Which is the 466?
>
> Its a shorter PCI card than the others, single channel, SCSI
> LVD. It has OK performance. I am currently using it in a
> RAID0+1 type config.
Where can I learn more about the pitfalls? I have a model 466
waiting to get employed (RAID5 config with three IBM drives) and
get very poor throughput in the 3MB/s range. I'm aware of the
expensive directory manipulations but even "dd if=/dev/zero
of=$FILE bs=8388608 count=..." is this slow and I don't know
where to start searching. This has been with 4.0-R and 4.1-R,
cvsup to -STABLE has just finished and results will be available
soon.
Is there a checklist for the things to do / to make sure? Could
it be bad cabling rather than a software configuration thing?
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Gerhard Sittig true | mail -s "get gpg key" Gerhard.Sittig@gmx.net
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