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On Thu, May 03, 2007 at 11:32:23AM +1000, Nick Piggin wrote: > The attached patch gets performance up a bit by avoiding some > barriers and some cachelines:> > G5> pagefault fork exec > 2.6.21 1.49-1.51 164.6-170.8 741.8-760.3 > +patch 1.71-1.73 175.2-180.8 780.5-794.2 > +patch2 1.61-1.63 169.8-175.0 748.6-757.0 > > So that brings the fork/exec hits down to much less than 5%, and > would likely speed up other things that lock the page, like write > or page reclaim. Is that every fork/exec or just under certain cicumstances? A 5% regression on every fork/exec is not acceptable. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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