On 4/20/08, Dan McGee <dpmcgee@gmail.com> wrote:
On Sun, Apr 20, 2008 at 12:21 PM, Thomas Bächler <thomas@archlinux.org> wrote:
Have a look at: http://bbs.archlinux.org/viewtopic.php?id=47390
According to the kernel configuration help, increasing the maximum number of CPUs from 4 to 8 will make the kernel 32KB bigger with no performance decrease.
Opinions?
I'd always rather these things go through the ML or a feature request, rather than a forum post. That way someone can actually trace the process.
Sounds fine to me, although I don't think there is any point on i686 (who would run >4 cores there?). x86_64 makes sense though.
Well.. if it isn't harmful in any way, and if we would do it on x86_64, then we should also do it on i686. Having as consistent a baseline as possible is good. As to actually doing it, are there any ramifications due to the potential for tracking additional cpus (timeslice allocation algorithmic changes?) that would be a noticeable performance inpact for people running 2 or 4 cpus?