Re: FastSCSI on WarpEngine
On Tue, Mar 04, 2003 at 12:54:45AM +0100, Ingo Juergensmann wrote:
> I would like to see around 4-6 MB/s coming out of the disks on that machine,
> so I wonder how to achieve this. Maybe the mentioned change in the source
> code from 50 to 25 would be a way. Instead of facing the frontier and risk
> data corruption with 10 MHz transfer a value of 37 could mean 7.5 MHz
> transfers... don't know whether this might work or not...
Hm.. I get only 3.3 MB/s peak performance and perhaps 2 MB/s realistic
performance on my 68060 with an IDE disk, would be interesting to see
a few more datapoints. Iirc my IDE is on something like a 10 MHz bus.
I remember a 68040 40 MHz had so little reserves im memory bandwidth
and CPU power that even io buffered in RAM (not in disk buffer) had
a maximum throughput of about 5.6 MB/s.
Richard
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