On 05/25/2013 04:34 AM, Marcelo Tosatti wrote: > On Thu, May 23, 2013 at 03:55:53AM +0800, Xiao Guangrong wrote: >> Zap at lease 10 pages before releasing mmu-lock to reduce the overload >> caused by requiring lock >> >> After the patch, kvm_zap_obsolete_pages can forward progress anyway, >> so update the comments >> >> [ It improves kernel building 0.6% ~ 1% ] > > Can you please describe the overload in more detail? Under what scenario > is kernel building improved? Yes. The scenario is we do kernel building, meanwhile, repeatedly read PCI rom every one second. [ echo 1 > /sys/bus/pci/devices/0000\:00\:03.0/rom cat /sys/bus/pci/devices/0000\:00\:03.0/rom > /dev/null ] -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
