Messages in this thread | | | Date | Fri, 19 Dec 2003 12:32:27 -0800 | From | William Lee Irwin III <> | Subject | Re: 2.6 vs 2.4 regression when running gnomemeeting |
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On Fri, Dec 19, 2003 at 09:11:50PM +0100, Christian Meder wrote: > I've got a longstanding regression in gnomemeeting usage when switching > between 2.4 and 2.6 kernels. > Phenomenon: > Without load gnomemeeting VOIP connections are fine. As soon as some > load like a kernel compile is put on the laptop the gnomemeeting audio > stream is cut to pieces and gets unintelligible . On 2.4.2x I don't get > even the slightest distortion in the audio stream under load. I played > around with different nice levels with no success. The problem persisted > during the whole 2.6.0-test series no matter whether I used -mm kernels > or pristine Linus kernels. Even when nicing the kernel compile to +19 > the distortions start right away. I tried Nick Piggin's scheduler which > fared slightly better after changing the nice level of gnomemeeting to > -10 but it's still a far cry from the 2.4.2x feeling without any > fiddling with nice values. > Any hints where to start looking are greatly appreciated.
Please instrument your workload with the following, and send logs of the output (preferably compressed) to me and possibly others:
top b d 5 vmstat 5 while true; do cat /proc/vmstat; sleep 5; done while true; do cat /proc/meminfo; sleep 5; done
A good way to log commands like this is:
(command) > /home/foo.log.1 2>&1 &
where parentheses surround the command in the actual shell input.
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