Hi
I hope I'm sending this to the right list, sorry if it's not :)
With compact flash cards connected via IDE what is the "normal" expected
transfer rates? I have a Sandisk (32 and 128MB) and I only get around
2MB/sec (read test using hdparm) when all the docs from sandisk suggest
around 16MB/sec. They haven't returned my emails so I suspect their specs
are a little misleading...they quote around 16MB/sec read transfer rates.
What sort of read rates should I be expecting?
Thanks
Paul
2MB a second is about right... Flash is slow... I get about that on an
older 64MB simple technologies flash card... maybe their doc says 16Mb/s
which would be quite accurate...
On Sun, 18 Nov 2001, Paul wrote:
> Hi
>
> I hope I'm sending this to the right list, sorry if it's not :)
>
> With compact flash cards connected via IDE what is the "normal" expected
> transfer rates? I have a Sandisk (32 and 128MB) and I only get around
> 2MB/sec (read test using hdparm) when all the docs from sandisk suggest
> around 16MB/sec. They haven't returned my emails so I suspect their specs
> are a little misleading...they quote around 16MB/sec read transfer rates.
>
> What sort of read rates should I be expecting?
>
> Thanks
>
> Paul
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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--
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Joel Jaeggli [email protected]
Academic User Services [email protected]
PGP Key Fingerprint: 1DE9 8FCA 51FB 4195 B42A 9C32 A30D 121E
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It is clear that the arm of criticism cannot replace the criticism of
arms. Karl Marx -- Introduction to the critique of Hegel's Philosophy of
the right, 1843.
After doubting my memory I jumped over to
http://www.sandisk.com/oem/cf-spec.htm to check out the specs again. Sure
enough they state:
Data Transfer Rate to/from Flash 20.0 MB/sec burst
Data Transfer Rate to/from Host 16.0 MB/sec burst
I have designed my own compact flash to IDE converter from schematics
supplied by sandisk. Perhaps the continuous data transfer rate is only
around 2MB/sec...They fail to mention that so it's probably the case :)
Thanks for your replies, Paul.
On Mon, 19 Nov 2001 04:44, Joel Jaeggli wrote:
> 2MB a second is about right... Flash is slow... I get about that on an
> older 64MB simple technologies flash card... maybe their doc says 16Mb/s
> which would be quite accurate...
>
> On Sun, 18 Nov 2001, Paul wrote:
> > Hi
> >
> > I hope I'm sending this to the right list, sorry if it's not :)
> >
> > With compact flash cards connected via IDE what is the "normal" expected
> > transfer rates? I have a Sandisk (32 and 128MB) and I only get around
> > 2MB/sec (read test using hdparm) when all the docs from sandisk suggest
> > around 16MB/sec. They haven't returned my emails so I suspect their
> > specs are a little misleading...they quote around 16MB/sec read transfer
> > rates.
> >
> > What sort of read rates should I be expecting?
> >
> > Thanks
> >
> > Paul
> > -
> > To unsubscribe from this list: send the line "unsubscribe linux-kernel"
> > in the body of a message to [email protected]
> > More majordomo info at http://vger.kernel.org/majordomo-info.html
> > Please read the FAQ at http://www.tux.org/lkml/