Messages in this thread | | | From | Frans Pop <> | Subject | Re: [git pull] scheduler changes for v2.6.26 | Date | Wed, 23 Apr 2008 18:23:14 +0200 |
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On Wednesday 23 April 2008, Ingo Molnar wrote: > another thing - Peter observed skipping on NOHZ. Does your skipping go > away if you boot with 'nohz' and/or with CONFIG_NOHZ=y disabled in the > .config?
Just realized that I forgot to reply to this...
Already tried that with .24 (<200804111718.56958.elendil@planet.nl>):
! On Friday 11 April 2008, Peter Zijlstra wrote: ! > I'm having some issue on my own desktop - I get occasional latencies of ! > up to 1 second! It seems to be related to NO_HZ, because when I run a ! > simple while loop to keep the cpu busy, or boot with nohz=off it ! > doesn't seem to happen. ! > ! > Could you try that, just to see if we're seeing the same thing? ! ! Booted with nohz=off, but it does not seem to make any difference for me. ! I still get the music skips and chew still gives the high latencies. ! ! $ ./chew2 ! pid 31568 preempted 4022 us after 1376 us ! pid 31568 preempted 6303 us after 6177 us ! pid 31568 preempted 8836 us after 7963 us ! pid 31568 preempted 13134 us after 7903 us ! pid 31568 preempted 20533 us after 9496 us ! pid 31568 preempted 22957 us after 8556 us ! pid 31568 preempted 28693 us after 9518 us ! pid 31568 preempted 251718 us after 8485 us
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