Subject: Re: pciide performance on alpha
To: Ken Wellsch <>
From: Manuel Bouyer <>
List: port-alpha
Date: 08/12/1999 16:35:54
On Thu, Aug 12, 1999 at 09:30:53AM -0400, Ken Wellsch wrote:
> I believe Andreas mentioned working with a PC164SX?  I too have an SX.
> I guess I should have sprung for the extra $$'s and got an LX like all
> the other alpha folks in-the-know as I too have noted the anemic EIDE
> performance vs the same drive and OS on an i386 platform (both using plain
> DMA).  When I moved my IBM drive from my PPro box to my SX box, I "lost"
> at least 50% and I'd claim 75% on transfer rates, based on bonnie
> measurements at that time.
> If I got off my butt and learned how to tweak the driver maybe I'd corrupt
> my file-systems, get no better performance, and learn to just shut-up 8-)
> I was getting 2-3Mb/s as it was (haven't checked recently) and I can
> boot from the IDE so I can't really complain...

Could someone send me the dmesg for a LX and a SX, so that I can have a
guess at what is wrong ?

For the SX, a dmesg with 'wdcdebug_pciide_mask' set to 0x10 can't hurt.

Manuel Bouyer, LIP6, Universite Paris VI.