Zhao, Yunfeng wrote: >>> This happens here too, with kvm versions as far back as kvm-20. But >>> with a clean install of Windows XP, it starts in about a minute >>> > (under > >>> the ACPI HAL) and idles using a few percent host cpu. Looks like >>> > some > >>> Windows update causes this, not a kvm regression. >>> >>> >>> >> It's not a Windows update. A new Windows install works well, as it >> > will > >> after all updates. If you boot it in an smp configuration, however, it >> will update its kernel, and the new kernel will exhibit the problem, >> even if booted later with a single vcpu. >> > [Yunfeng] In my case, the guest was installed with 2 vcpus, and then the > disk image works as a back file of qcow imgs. T > he smp windows test cases will boot the qcow img with 2vcpus. > My experience is that the installation speed of windows guest > (installing from iso file) is also slow. > >
I ran the same image under qemu 0.9.0, uniprocessor, and got the same results: high host cpu usage while the guest is idle. Most likely the BIOS ACPI tables are misconfigured and the Windows idle loop is confused. Do Xen SMP ACPI guests exhibit the same issues? If not, they have probably fixed this issue in their bios. -- error compiling committee.c: too many arguments to function ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ kvm-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/kvm-devel
