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Date: Thu, 25 Aug 2005 15:35:39 -0500
From: Mark Kane <mark@mkproductions.org>
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To: Laurence Sanford <lauasanf@wilderness.homeip.net>
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Cc: freebsd-questions@freebsd.org
Subject: Re: Performance Issues with AMD64 3000+, 1.5GB RAM,
	FreeBSD 5.4-RELEASE
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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