On Sat, Feb 16, 2008 at 05:37:00PM -0600, Anthony Liguori wrote: > Marcelo Tosatti wrote: > >The following patchset, based on earlier work by Anthony and Ingo, adds > >paravirt_ops support for KVM guests enabling hypercall based pte updates, > >hypercall batching and cr3 caching. > > > > Could you post performance results for each optimization? I'm > particularly curious if the hypercall batching is very useful.
Batched hypercall pte updates give 8.5% performance improvement on kernel compile: http://www.mail-archive.com/kvm-devel@lists.sourceforge.net/msg12395.html I can get separate results tomorrow or Monday, but I'm sure batching plays a significant role. For the kernel compile test, there is an average of 5 pte updates per batched hypercall. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
