On Mon, Feb 04, 2008 at 03:45:10PM +0100, Peter Zijlstra wrote: > > see my previous mail to Ingo (you were Cc.), latency top says that Xorg and > > gnome-terminal suffers 300+ms latency in scheduler: waiting for cpu. > > what happens when you turn CONFIG_FAIR_GROUP_SCHED off?
If I disable CONFIG_FAIR_GROUP_SCHED, it is a lot better. I would not call it optimal, though. Xorg has 20ms latency, gnome-terminal another 20ms latency. If I just press a key (a letter for instance) to see how autorepeat fills terminal, one can see that autorepeat is not smooth and it is stopping for a little while (really extra short stops are visible but still visible). But it is really a ton better that it was with fair group sched. So, any conclusion? The case is closed or any further investigation should be done? -- Lukáš Hejtmánek -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
