21.11.2010 03:24, Dmitry Golubev wrote: > Hi, > > Seems that nobody is interested in this bug :( > > Anyway I wanted to add a bit more to this investigation. > > Once I put "nohz=off highres=off clocksource=acpi_pm" in guest kernel > options, the guests started to behave better - they do not stay in the > slow state, but rather get there for some seconds (usually up to > minute, but sometimes 2-3 minutes) and then get out of it (this cycle Just out of curiocity: did you try updating the BIOS on your motherboard? The issus you're facing seems to be quite unique, and I've seen more than once how various different weird issues were fixed just by updating the BIOS. Provided they actually did they own homework and fixed something and released the fixes too... ;) P.S. I'm Not A Guru (tm) :) /mjt -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html