On Saturday February 15 2003 01:49 pm, Dave Laird wrote:
> On Friday 14 February 2003 11:35 pm, vatbier wrote:
> > What is a normal sustained transfer rate for UDMA5 in Linux (
> > what does "hdparm -t /dev/hda" return on your computer)?
> > How in Win XP can I test the sustained transfer rate like in
> > Linux with the command "hdparm -t /dev/hda" ? Would it be the
> > same speed as in Linux ?
>
> hdparm -t /dev/hda1
> Timing buffered disk reads: 64 MB in 2.08 seconds = 30.71 MB/sec
>
> My UDMA is set by the motherboard resources, and is fast as the
> dickens. I hope my answer helps in some way.
>
> Dave
My drives are *udma5 with hdparm -t rates more than 50% better than
30.71 MB/sec (47+), on an ata/100 controller. Hdparm as most
benchmarks are, is somewhat useful for seein if setting changes
improve the hdparm results on your system, but they are irrelevant
when it come to real world data tranfers, or comparing with other
users and their systems. Hdparm -Tt measures meaningless burst
rates.
--
Tom Brinkman Corpus Christi, Texas
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