Hi, Thanks for your prompt answer. Regards. J.P. -----Message d'origine----- De : Martin Kletzander [mailto:mkletzan@redhat.com] Envoyé : jeudi 9 juillet 2015 14:46 À : Jean-Pierre Ribeauville Cc : libvirt-users(a)redhat.com Objet : Re: [libvirt-users] cpuacct and emulator/cpuacct On Wed, Jul 08, 2015 at 09:11:11AM +0000, Jean-Pierre Ribeauville wrote: I don't know from the top of my head whether the accounting is effective for all tasks in the current group (i.e. /test/cpuacct.usage only accounts for /test/tasks) or also subgroups. Anyway, if the second is true (which I think it is), then /test/emulator is only accounting for the emulator thread and the upper one is for emulator, all vCPU threads and I/O threads. Martin