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SubjectRe: Very slow IDE performance

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.

Andre Hedrick
The Linux IDE guy

On Mon, 23 Aug 1999, Alan Cox wrote:

> > The amount of RAM the kernel found was normal, the bogomips value at
>
> Over 64Mb ? If so try mem=64M
>
> > 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
>
>
>
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