[PD] [PD-dev] tcl/tk 8.5, antialising, and large fonts lead to huge cpu overhead bug?

Hans-Christoph Steiner hans at eds.org
Sun Feb 25 07:53:03 CET 2007

Sure, use a fixed width font.  I was using a fixed width font in my  
tests: DejaVu Sans Mono.


On Feb 21, 2007, at 1:28 PM, Miller Puckette wrote:

> Is there a way to disable proportional fonts?  THat might be all we  
> need...
> cheers
> M
> On Wed, Feb 21, 2007 at 09:33:54AM -0500, Ivica Ico Bukvic wrote:
>>> You're right, it definitely shouldn't be that bad.  Have you tried
>>> this same test on different platforms, or with different versions of
>>> Tcl/Tk?  (I am guessing you are on Windows, which I don't use).  I
>> Nope. I am on a Linux box (not literally at this very moment, but  
>> I use PD
>> exclusively on Linux). I did try this on 2 different machines with  
>> same
>> results. Although both of them were AMD cpus (3000+ laptop and a  
>> 4800+
>> desktop, nicely loaded in terms of RAM etc.), since your test  
>> below was on a
>> totally different architecture, my hunch is that this has nothing  
>> to do with
>> cpu choice. The two also used two different distros.
>>> just tried on my G4 800 with Tcl/Tk 8.4.15-cvs.  I get about 50%
>>> usage from one num2 at 24 point at 100hz.
>> Is this with antialiased fonts? Either way, what we have so far  
>> suggests
>> that the tcl/tk is a real hog. With GriPD being apparently  
>> abandonware,
>> should one simply use Gem to display data that calls for refreshes  
>> faster
>> than 10Hz? To me this idea sounds like an overkill...
>> Ico
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