On Sat, 22 Nov 2014 13:37:20 +0100 Frank Neumann <beachnase@xxxxxx> wrote: > > Hi Will, > > [..] > > > 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. Doing the usual searches doesn't seem to turn up anything useful. > > > > Any help gratefully appreciated. > > > > I would add that I've double checked that the bios is set for 'performance'. > > Just a shot in the dark here, but did you try using the "cpufreq-set" tool (in > Debian-based distributions: in package "cpufrequtils) to set the CPU governor? > > (As root), do: > # cpufreq-set -g performance > > On an older machine, I had Xrun issues sometimes, and this tool helped overcome > it at that time. However, I have never seen the CPU load spikes you mention. > > Greetings, > Frank Thank you both for such a quick response. This solved the problem completely :) Xruns completely disappeared and qjackctl reading dropped from over 40% to less than 10% P.S. I was running some quite complex yoshi/zyn patches - they can be quite demanding! -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
