[PD] what makes Pd-extended 0.43 so CPU-hungry?

[Hans-Christoph Steiner]

I honestly don't know the cause, and haven't really checked on numbers.  I mostly work on my four year old laptop, and test by running patches I know (solitude is a good test of heavy CPU usage, it won't run on a machine less than 1.6GHz, from my experience).

As for drawing operations like anti-aliasing, those would not show up in the 'pd' process, but rather the 'pd-gui' process, since that's the Tk part.

Are you seeing the CPU increase in the 'pd' process?  How are you measuring this?

.hc

On May 4, 2012, at 9:31 AM, katja wrote:

> Hello,
> 
> I've installed Pd-extended 0.43 versions (Linux and OSX) from the
> autobuilds several times in the past year. The latest builds seem to
> work fine in many aspects, but they are still so CPU-hungry: ~ 50%
> more than Pd-extended 0.42. How come?
> 
> A while ago, the new PortAudio version was blamed
> (http://www.mail-archive.com/pd-list@iem.at/msg50357.html). Indeed,
> using Jack solves the load difference for OSX.
> 
> But on Debian I also observe a 50% load increase for the new
> Pd-extended. No matter if ALSA or Jack is used. Does anyone have
> similar observations with Linux builds?
> 
> BTW, I'm happy with Tk 8.5's antialiased font! Initially, I feared
> that antialiasing was responsible for increased load on Debian, but
> disabling GUI updates did not make noticeable difference. It seems
> that antialiasing is done rather efficiently, the performance drop
> must be somewhere else.
> 
> Katja
> 
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