Re: Submissions for 2.4.19-pre [x86 Syscall Optimizations (Alexander Khripin)]

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Tue Feb 26 2002 - 04:31:09 EST


> > Eh? The patch doesn't do anything but move movl ops around. I suspect
> > the intention may to eliminate datapath stalls, which may be a fine
> > micro-optimization, but I think we need some numbers first ...
>
> UNIXbench numbers on the way :)

Remember to get them with more than one vendor and family of processors.
Quite a lot of proposed micro-optimisations turn out to be pessimisations
except for the processor of the original proposer 8(
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