Re: Very slow IDE performance

CaT (cat@zip.com.au)
Mon, 23 Aug 1999 13:32:20 +1000

On Sun, Aug 22, 1999 at 07:59:06PM -0700, andre@suse.com wrote:
>
> The slowest DMA mode 2 multiword I have observed on a disk was near
> 3.4MB/sec. But this had a disk that did not use its cache and was bloated
> with firmware.

I remember I had a seagate that did .17 meg/sec. As near as I can tell it
was fubar because when I replaced it with a nice IBM HD I started getting
12.61Meg/sec which is rather more respectable. :)

> > > I had her do hdparm -t , which gave a transfer rate of .38 Megs per
> > > second. Any ideas on what could cause this? Unfortunately, I don't
> >
> > For some of the very very old drives that is believable, but not for
> > anything with DMA mode 2. Obvious stuff - is the cache enabled on the
> > machine, does hdparm -T (test buffer cache) look believable for a P90 etc

-- 
CaT (cat@zip.com.au)                       URL: http://www.zip.com.au/dev/null




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