[PD] how to optimize system for pd performance?

Roman Haefeli reduzierer at yahoo.de
Mon Dec 8 00:22:55 CET 2008


On Sun, 2008-12-07 at 19:43 +0000, Tim Blechmann wrote:
> >> i encountered, that 'ondemand' cpu scaling doesn't work correctly when
> >> running pd with realtime priority. even if pd is using 80% or more
> >> resources (of one core), the cpu frequency is not raised and staying at
> >> 800MHz. i can force it to go up by running an instance of 'burnMMX' (or
> >> something else, that burns as many cycles as possible). when running pd
> >> with '-nrt', automatic scaling works fine. also, as a workaround, i can
> >> set the scaling_governor to 'userspace' and then set the cpu frequency
> >> manually.
> > 
> > I don't remember being hit by this, but my memory may trick me. I'd use
> > cpufreq-set(1) as root to switch the scaling governor to "performance"
> > when performing.
> 
> i usually set the cpu speed to the lowest feasible frequency ... the 
> slower the cpu, the cooler the computer, so less audible noise is 
> produced by the cpu fan during the performance ...
> using gnome's cpufreq-applet, one can change the scaling governor/
> frequency with two mouse clicks ...


so speaks the minimalist, cpu-wise..... ;-)

unfortunately, many netpd-synths and netpd-fx aren't that modest,
cpu-wise.

roman


	
		
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