[ubuntu-studio-devel] -controls

Len Ovens len at ovenwerks.net
Thu Dec 8 04:26:30 UTC 2016

On Wed, 7 Dec 2016, lukefromdc at hushmail.com wrote:

> The CPU governor is easily controlled in any DE. Ubuntu offers
> indicator-cpufreq, which will also work as a tray applet when not
> in Unity. I've used it in MATE, IceWM, Cinnamon, even gnome-shell
> so it should have no trouble in XFCE either.  Many DE's offer their
> own CPU governor controls (Cinnamon and MATE both do) but
> this one is cross-DE and can be used to set any available CPU
> governor as needed.
> I normally turn it all the way up for video rendering due to Kdenlive
> slowing on the OnDemand governor and use OnDemand for everything
> else.

You don't have a newer intel chip then. There is no ondemand... and to 
make matters worse there is a powersave, but it is not the same as the 
powersave you probably have. My powersave is like your ondemand, but it is 
controlled by the CPU, your powersave is probably 800Mhz. My reason for 
choosing performance is both the highest speed without over heating as 
well as a steady speed as I have found speed changes tend to give xruns at 
low latency. However, when I compile Ardour with turbo/Boost turned on I 
sit higher (3.4Ghz) but still cool enough with stock cooling than the 
design 3.2 Ghz. Ardour build runs 100% on all cores so it makes a good CPU 
load test. Anyway, with boost turned on, performance is not a steady 
speed, but varies from top design speed to max boost speed depending on 
cpu temp and load. So for steady state boost has to be turned off.

There are some other considerations that a simple governor control will 
not cover. So we are making a utility to cover all of it.

Len Ovens

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