On Sun, 26 Mar 2006 11:01:21 -0800 "Chen, Kenneth W" <kenneth.w.chen@xxxxxxxxx> wrote: > Luck, Tony wrote on Friday, March 24, 2006 3:02 PM > Tony, please queue the following two patches in your next update. They still > apply cleanly on Linus' git-tree as of this morning. Thanks. > > [patch] optimize flush_tlb_range on large numa box > http://marc.theaimsgroup.com/?t=114168341600005&r=1&w=2 > I love this patch :) Our performance validation team found ia64_global_tlb_purge() performance problem in do_wp_page()/ia64_global_tlb_purge(), copy-on-write. When they does fork() at the rate of 4-500 fork/sec, 40% of cpu time was spent in copy-on-write's ia64_global_tlb_purge. By this, customer's shell-script cannot scale enough. (we asked them to reduce fork()..) (Because they have already removed their test enironment, I can't ask them to try this patch. sorry.) Thanks, --Kame - : send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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