Messages in this thread | | | Subject | Re: 2.6 vs 2.4 regression when running gnomemeeting | From | Christian Meder <> | Date | Sat, 20 Dec 2003 00:30:33 +0100 |
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On Fri, 2003-12-19 at 21:32, William Lee Irwin III wrote: > 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.
Hi,
I've attached the tarred output of a gnomemeeting run without load and without distortions and another tarred output of a gnomemeeting run while compiling a kernel with severe distortions in the audio stream.
Christian Meder -- Christian Meder, email: chris@onestepahead.de
What's the railroad to me ? I never go to see Where it ends. It fills a few hollows, And makes banks for the swallows, It sets the sand a-blowing, And the blackberries a-growing. (Henry David Thoreau)
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