Russ.Dill at asu.edu
Thu Jun 7 13:21:06 EDT 2001
On 07 Jun 2001 10:44:12 +0100, David Woodhouse wrote:
> abraham at 2d3d.co.za said:
> > why is this necessary though? The kernel docs make it pretty clear
> > that enabling that causes severe performance penalties which I wanted
> > to avoid.
> Then fix the kernel docs. :)
I already tried feeding rmk such a patch. The unaligned handly only
impacts performance when there is an unaligned read. So for you, its
good you now know and are working around this. However, some drivers
*cough*jffs2*cough* will make unaligned reads from time to time, but
only rarely. In this case, the handler speeds things up by doing the
access, instead of producing an oops.
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