[PD] OSX cpu usage

Hans-Christoph Steiner hans at eds.org
Tue May 27 11:30:12 CEST 2008

For the next Pd-extended release, it'll use Tcl/Tk 8.5, which  
includes a lot of work done on the Mac OS X graphics side of things.   
That should make things faster.


On May 27, 2008, at 9:24 AM, Derek Holzer wrote:

> Hi Matt,
> both problems are well known. On OSX, the Coreaudio interface is quite
> CPU hungry. Using Jack is recommended. Myself and others have posted
> several times about this.
> And as far as the GUI goes, I've been bringing this issue up for years
> now. You can check the archives yourself and see. In short, PD's  
> GUI is
> slower on OSX than any other OS. The solutions which are often  
> suggested
> to me when I complain about this are a) use less GUI objects, b)  
> become
> a developer and fix it yourself and c) use Linux. I chose the last,  
> and
> found that my patches ran 50% better using Linux on the same  
> Powerbook.
> best,
> d.
> Matt Barber wrote:
>> If I am having PD run through coreaudio, either built-in or through a
>> firewire interface, the cpu usage jumps to a consistently high 25% to
>> 50% just by clicking "compute audio."
>> Then, if I connect to jack (using jackpilot), computing audio  
>> shows no
>> huge jump in cpu, so that problem disappears.
>> The other problem is that any vu meters connected to [env~] -- even
>> running at 16384 -- will make the "Pd" or "Pd-extended" processes  
>> (not
>> the "pd" process as before)  jump to between 15% and 30%, but the
>> corresponding jump does not show up in pd's cpu loadmeter.
> -- 
> derek holzer ::: http://www.umatic.nl ::: http://blog.myspace.com/ 
> macumbista
> ---Oblique Strategy # 36:
> "Consult other sources
> -promising
> -unpromising"
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don't have to examine our own lives.", from "The Idols of  
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