On Thursday 01 May 2008 7:16:53 pm Marcelo Tosatti wrote: > On Thu, May 01, 2008 at 06:00:44PM -0500, Karl Rister wrote: > > Hi > > > > I have been trying to do some testing of a large number of guests (72) on > > a big multi-node IBM box (8 sockets, 32 cores, 128GB) and I am having > > various issues with the guests. I can get the guests to boot, but then I > > start to have problems. Some guests appear to stall doing I/O and some > > become unresponsive and spin their single vcpu at 100%. > > Does -no-kvm-irqchip or -no-kvm-pit makes a difference? If not, please > grab kvm_stat --once output when that happens.
I have tried -no-kvm-irqchip and it didn't help any. I will try -no-kvm-pit and get the kvm_stat info for both. > > Also run "readprofile -r ; readprofile -m System-map-of-guest.map" with the > host booted with "profile=kvm". Make sure all guests are running the same > kernel image. Will do. > > The profiling should be easier to understand if you have 1 guest spinning > and remaining ones idle. -- Karl Rister IBM Linux Performance Team [EMAIL PROTECTED] (512) 838-1553 (t/l 678) ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
