Recent Fedora Core kernels (plus my SPEC file for 2.6.8-1.541 with Athlon support)
William M. Quarles
quarlewm at jmu.edu
Tue Nov 30 16:36:23 UTC 2004
Dave Jones wrote:
<snip>
> > C. If it doesn't hurt and it would probably help, I don't see what's the
> > matter with making an Athlon-optimized kernel.
>
> A number of reasons.
> - It's one more column in the matrix of supported kernels to worry about.
> This may seem insignificant, but it takes quite a while to push
> a kernel package through the buildsystem given how many variants
> it spits out. On a busy day (like for eg, just before release), it
> can take the better part of a day to get packages built.
> - The gain just isn't worth it over the 2.4 kernels.
> Now that the runtime optimisations get performed in 2.6, theres only
> one thing thats missing that would be in an Athlon optimised kernel,
> and thats the optimised copy_page/clear_page, which are really only
> a win when a lot of data is being copied back/forth between the kernel,
> and even then, only under certain usage patterns. I'll be surprised
> if this shows up on any real-world application.
<snip>
Apparently the man who started this thread found his real-world
applications.
----
Peace,
William
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