Messages in this thread | | | Date | Tue, 25 Sep 2007 14:23:29 +0530 | From | Srivatsa Vaddagiri <> | Subject | Re: [git] CFS-devel, latest code |
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On Tue, Sep 25, 2007 at 10:33:27AM +0200, Mike Galbraith wrote: > > Darn, have news: latency thing isn't dead. Two busy loops, one at nice > > 0 pinned to CPU0, and one at nice 19 pinned to CPU1 produced the > > latencies below for nice -5 Xorg. Didn't kill the box though. > > > > se.wait_max : 10.068169 > > se.wait_max : 7.465334 > > se.wait_max : 135.501816 > > se.wait_max : 0.884483 > > se.wait_max : 144.218955 > > se.wait_max : 128.578376 > > se.wait_max : 93.975768 > > se.wait_max : 4.965965 > > se.wait_max : 113.655533 > > se.wait_max : 4.301075 > > > > sched_debug (attached) is.. strange.
Mike, Do you have FAIR_USER_SCHED turned on as well? Can you send me your .config pls?
Also how do you check se.wait_max?
> Disabling CONFIG_FAIR_GROUP_SCHED fixed both. Latencies of up to 336ms > hit me during the recompile (make -j3), with nothing else running. > Since reboot, latencies are, so far, very very nice. I'm leaving it > disabled for now.
-- Regards, vatsa - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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