On Sat, Nov 22, 2014 at 12:27 PM, Will Godfrey <willgodfrey@xxxxxxxxxxxxxxx> wrote: > Eventually I found the cause. Going from linux kernel 3.2 to 3.16 :( > This, apparently, does very aggressive CPU frequency scaling. Drop back to 3.2 > and all is sweetness and light again. > > The question is whether there is a reasonably straightforward way to stop this > behaviour. You can temporarily disable CPU frequency scaling by running the following: cpupower frequency-set -g performance To return to normal "when-needed" CPU frequency scaling (better for battery / heat) cpupower frequency-set -g ondemand This might work too, it "hard-sets" to the lowest CPU speed: generally switching CPU freq causes the xruns, not the actual slow-setting itself. Useful for battery performance. cpupower frequency-set -g powersave Note that frequency scaling is currently broken on newest -rt kernels on *old* CPU's. ArchAudio repositories have a hard-coded "performance" -rt kernel, which sets the default speed to max: thanks JackWinter for packaging that! Cheers, -Harry -- http://www.openavproductions.com _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
