[LAU] Xruns :(

[Will Godfrey]

On Sat, 22 Nov 2014 13:37:20 +0100
Frank Neumann <beachnase at web.de> 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.