Hi all: Windows2008 Guest run without pressure for long time. Sometimes, it stop and looks like hanging. But when I connect to it with VNC, It resume to run, but VM's time is delayed . When the vm is hanging, I check the main thread of QEMU. I find that the thread is blocked in g_poll function. it is waiting for a SIG, However, there is no SIG . I tried the clock with "hpet" and "no hpet", but came out the same problem. Then I upgrade the glibc to newer, it didn't work too. I'm confused. Is the reason that VM in sleep state and doesn't emit the signal. I set the windows 's "power option", enable/disable the "allow the wake timers", I didn't work. Is anybody have met the same problem before, or know the reason. Your reply will be very helpful. Thanks --xiexiangyou -- 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