Linux-kernel mailing list archive 1998-48,: Re: IDE-DMA strangeness (another one)

# Re: IDE-DMA strangeness (another one)

Kurt Garloff (garloff@kg1.ping.de)
Wed, 2 Dec 1998 23:43:34 +0100

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On Tue, Dec 01, 1998 at 04:10:08PM -0500, Alex Buell wrote:
> hdparm -t reports 9.6MB/s throughput for /dev/hda although hdparm -T
> reports 33MB/s throughput, I don't quite believe that one though. :o)

-T [...]
This displays the speed of reading directly from
the Linux buffer cache without disk access. This
measurement is essentially an indication of the
throughput of the processor, cache, and memory of
the system under test. [...]

So 33MB/s is quite realistic, but in no way characteristic for your HD.

    --
    Kurt Garloff <K.Garloff@ping.de>  (Dortmund, FRG)
    PGP key on http://student.physik.uni-dortmund.de/homepages/garloff

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