>> >> Superb results, when I run the old in- kernel apic I got much higher idle >> cpu consumtion. I know that's vmenter- vmexit latency was drastically >> improved but 0- 1% cpu consumption for winxp 32 bit sounds too good to be >> true. >> Are you sure an ACPI HAL is used in the guest? (can be checked by >> looking at the computer node in the device manager). > >I did a clean install and didn't change it over to StandardPC. The Control >Panel says "ACPI Uniprocessor PC" or something like that (recalling from >memory right now). As a third datapoint, I am seeing the TPR changing >rapidly (which I would expect 0 changes if the ACPI stuff was disabled).
Great, I was a little skeptical (sorry for that) since several months ago when I tested the in-kernel-apic the idle time was much worse. After talking today with Avi, he said his vmentry-exit latency drastically improved performance and even the qemu's apic can reach these figures. I'm sure that with load, you implementation will achieve performance advantage. > >> I noticed the kvm_stat below, there are no mmio exits. You need to >> update the statistics. > >Yeah, this is fixed in my latest code which I will send out soon. I >actually added a "light_mmio" and "apic_mmio" stat so we can tell the >difference. I left mmio_exits to count the ones that go to userspace. Thanks, for the ultra-fast responsiveness. ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
