On 15-Dec-99 Ariel Biener wrote:

>  hdparm -t is hardly a real life testing utility.

Right. Actually, I call it a toy. As for the number itself, it sound very
similar to the IDE busmastering (mode 2 ?) limit, though might be a pure
coinsidence. Of course, it has nothing to do with the disk _media_ I/O
performance, but only qualifies the disk cache<->controller path.

> > > As for speed... hdparm -t /dev/hde gives me about 22MB/sec with UDMA66
> > > enabled (this is a cheap 5400 rpm drive). When disabled, speed drops to
> > > about 10MB/sec. Note that I have seen UDMA33 drives that go as high as
> > > 15MB/sec. Go figure...
> > 
> > 22MB/s ???Amazing!  Did anybody else gain similar results?

Regards,

Evgeny

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