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Date:      Thu, 25 Aug 2005 15:35:39 -0500
From:      Mark Kane <mark@mkproductions.org>
To:        Laurence Sanford <lauasanf@wilderness.homeip.net>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Performance Issues with AMD64 3000+, 1.5GB RAM, FreeBSD 5.4-RELEASE
Message-ID:  <430E2B9B.4050005@mkproductions.org>
In-Reply-To: <20050825151032.A88957@devel.cotharyus.net>
References:  <430D3823.9070301@mkproductions.org> <20050825160909.GB10134@slackbox.xs4all.nl> <430DF015.5000203@mkproductions.org> <20050825173758.GA10790@slackbox.xs4all.nl> <430E0461.3030101@mkproductions.org> <20050825181931.GE10790@slackbox.xs4all.nl> <430E105D.3080509@mkproductions.org> <20050825200838.GA18166@slackbox.xs4all.nl> <430E294C.2080207@mkproductions.org> <20050825151032.A88957@devel.cotharyus.net>

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Laurence Sanford wrote:
> 
> 
> On Thu, 25 Aug 2005, Mark Kane wrote:
> 
>>> Hmm, if bzip2 can't saturate the CPU, I would say it's probably waiting
>>> for disk reads/writes.
>>
>>
>> The drives I was trying to compress from/to are both brand new 200GB 
>> Maxtor 7200RPM ATA133 drives. Maybe that has something to do with the 
>> bad controller on this series of boards.
> 
> 
> 
> Are both of these drives on the same channel? If so, remember that ATA 
> cannot read/write to two drives on the same channel at the same time.

Nope, my board does not allow them to be on the same channel or I get 
UDMA ICRC READ and WRITE errors (had a thread going about that here as 
well).

All drives are on their own channel.

-Mark




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