From: Mark Lord <liml@rtr.ca>
To: John Treubig <jtreubig@hotmail.com>
Cc: dwm@austin.ibm.com, jeff@garzik.org, linux-scsi@vger.kernel.org,
linux-ide@vger.kernel.org
Subject: Re: Controlling PATA access speeds
Date: Fri, 02 Jun 2006 18:33:06 -0400 [thread overview]
Message-ID: <4480BCA2.1050707@rtr.ca> (raw)
In-Reply-To: <BAY113-F20C5E81293FCD88D28597DDF910@phx.gbl>
John Treubig wrote:
> Because of my setup, I have had to pull pin 34 (PDIAG) high at the
> Promise to make the Promise think I have a 40 pin cable. At boot, the
> Promise thinks I have a 40 wire cable installed and gives me a warning,
> yet when I run my program that measures transfer rate in Linux, I still
> see the same data rates as with an 80 wire cable (pin 34 shorted).
What data rate is that? If it's less than 25MB/sec (or so),
then the udma mode won't make much of a difference either way.
Cheers
next prev parent reply other threads:[~2006-06-02 22:33 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-01 17:25 Controlling PATA access speeds John Treubig
2006-06-01 18:52 ` Jeff Garzik
2006-06-01 18:59 ` James Bottomley
2006-06-01 20:35 ` John Treubig
2006-06-01 21:21 ` Doug Maxey
2006-06-02 15:31 ` John Treubig
2006-06-02 20:37 ` John Treubig
2006-06-02 21:10 ` Doug Maxey
2006-06-02 22:33 ` Mark Lord [this message]
2006-06-01 22:01 ` Sergei Shtylyov
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