On Mon, 1 Oct 2007, Marc Fonvieille wrote: > On Tue, Sep 18, 2007 at 12:44:52AM -0700, Jeff Roberson wrote: >> >> Marcus, >> >> What has happened is that you have run an x application that is so >> expensive we no longer consider it interactive. Unfortunately, due to the >> nature of the x server architecture, much of the compute time is spent in >> x11 rather than the offending application. There really isn't anything to >> be done in this case other than mark X as real-time. You can try to tune >> up the interactivity heuristic limit by setting kern.sched.interact to a >> higher value. This will help with short term bursts of x server cpu >> utilization, however, sustained, expensive x windows processing will always >> trigger poorer interactive behavior. >> > > I have the same problems as Roman: once I compile something, most of X > applications become slow as hell with lagging screen refresh. That's on > -CURRENT (with all debug, malloc, invariant things disabled) with ULE > and Xorg 4.3 (I'll test with the legacy scheduler as soon as possible). > This behavior does not occur on 6.2 but with Xorg 7.2, so I really suspect > last Xorg release to be guilty. Jeff you often mentioned tests on your > laptop, could you check what Xorg version your run? xorg-7.2 X.Org complete distribution metaport xorg-server-1.2.0_2,1 X.Org X server and related programs If you're running very recent current you can try renicing X negatively. If you nice -20 and it doesn't improve then it's probably not the cpu scheduler causing the delay. What display driver are you using? How much cpu is X using while you're experiencing the lag? Thanks, Jeff > > I played with kern.sched.interact MIB but it was worse. > > -- > Marc >Received on Mon Oct 01 2007 - 16:27:42 UTC
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