On Thu, Sep 27, 2012 at 09:10:11AM +0200, Ingo Molnar wrote: > The theory would be that this patch fixes psql performance, with CPU > selection being a measurable but second order of magnitude effect. How > well does practice match theory in this case?
Yeah, it looks a bit better than default linux. A whopping 9% perf delta :-). v3.6-rc7-1897-g28381f207bd7 (linus from 26/9 + tip/auto-latest) + performance governor ====================================================================================== plain ----- tps = 4574.570857 (including connections establishing) tps = 4579.166159 (excluding connections establishing) kill select_idle_sibling ------------------------ tps = 2230.354093 (including connections establishing) tps = 2231.412169 (excluding connections establishing) NO_WAKEUP_PREEMPTION -------------------- tps = 4991.206742 (including connections establishing) tps = 4996.743622 (excluding connections establishing) -- Regards/Gruss, Boris. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
