[PD] -rt w/ pd-extended on OS X

[Dan Wilcox]

On Mar 7, 2010, at 8:16 AM, William Brent wrote:

> Hi Ben,
> 
> For what it's worth, I just tested a patch running steady at 85% with
> 0.41.4-extended, and realtime reliably gives me values between
> 992-1008ms for a [delay 1000].  This is on a 2.5Ghz Intel Core 2 Duo,
> 4GB, OS 10.5.8.

Same values for me with same hardware running 10.6.2 and Pd-extended 0.41.4.

After using Pd on Linux for some years, I was expecting to experience the dreaded OSX "slow pd and midi syndrome".  So far I haven't had any problems of the sort and my patches run just as they do in Linux with -rt.  Of course I'm not using GEM and I'm not running 20 other applications at once as most mac users seem to do ...


> On Sat, Mar 6, 2010 at 10:25 PM, B. Bogart <ben at ekran.org> wrote:
>> Hey all,
>> 
>> I've been running a patch on an intel mac for a while, but noticed some
>> horrid timing problems [delay 1000] takes ~3000ms according to [realtime].
>> The patch uses between 50% and 105% CPU according to top.
>> 
>> I've not got it down to about ~1500ms, but I can't pull back the patch any
>> further, and top says it using only 50-64% CPU...
>> 
>> I realized I was not using -rt, but when I try and run pd-extended (sorry I
>> don't recall the version, probably the stable one as of Sept 2009) pd does
>> not start in -rt mode, I get no messages from stdout or the console like I
>> do in linux to tell me about priority scheduling.
>> 
>> Are there versions of pd-extended for OSX where -rt works? How do I set it.
>> 
>> I tried:
>> 
>> -rt in "startup flags"
>> 
>> sudo /Application/Pd-extended/.../bin/pd -rt
>> 
>> sudo su
>> /Application/Pd-extended/.../bin/pd -rt
>> 
>> And nothing works.
>> 
>> So what have I missed? Or what Pd should I be using?
>> 
>> Thanks,
>> B. Bogart
>> 
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> 
> 
> 
> -- 
> William Brent
> www.williambrent.com
> 
> “Great minds flock together”
> Conflations: conversational idiom for the 21st century
> 
> www.conflations.com
> 
> 
> 

--------
Dan Wilcox
danomatika.com
robotcowboy.com




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