On Tue, 23 Oct 2012, Delpistroumph wrote:

> Hi all.
> 
> I'm a drummer and I use to work with Ardour2 and a Korg KDM2 metronome.
> When I set 120 on the Korg KDM2 metronome, it's the same flow rate as Ardour2:
> I can use the grid or the ardour2 metronome:
> _ it's the same flow rate_.
> 
> But not with rosegarden!
> 
> So I guess it's rosegaden that don't play the good flow rate.
> 
> Know issue?
> Any solutions?

Depends on your PC.

I had some problems with Rosegarden running faster and slower. But this
wasn't Rosegarden's fault.

On Intel Core-CPUs we have 2 mechanisms setting CPU speed:
- Speedstep
- Turbo Boost

While the Linux system timer can handle Speedstep (e.g. set by cpufreqd)
it can't handle Turbo Boost. Turbo Boost increases CPU's clock when only
one CPU-core need's more power.

My solution:
Disable Turbo Boost in the PC's BIOS.


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