Re: ppa module: bad performance

Grant R. Guenther (grant@knot.torque.net)
Mon, 23 Jun 1997 07:52:22 -0400 (EDT)


Ulrich Windl wrote:

> Using the ppa module in 2.0.30 (I think it's version 0.26) we both
> were disappointed by the performance: Even though the drive operated
> in 8-bit mode, the throughput was even worse than under DOS in nibble
> mode. During the test (dumping a 6MB file to /dev/null) the light of
> the ZIP drive was continuously on, but the dd Process displayed stat
> "D" most of the time. The module was loaded with default parameters
> (that is none).

I'd suggest that you start by checking out all the work that has gone into
that driver in the last year or so. Recent 2.1 kernels contain an
improved driver, and more improvements can be found on Dave Campbell's
page: http://www.torque.net/~campbell

There's also the linux-parport mailing list and the Parallel Port Devices
home page at http://www.torque.net/linux-pp.html

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Grant R. Guenther grant@torque.net
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