[PD] Jack CPU usage WAS: Pd-extended 0.41.4-rc3 released!

[Hans-Christoph Steiner]

On May 28, 2009, at 3:08 AM, IOhannes m zmoelnig wrote:

> Hans-Christoph Steiner wrote:
>> I know little about Jack, and I think this bug is also in vanilla,  
>> so its pretty unlikely to be fixed this time around.  Try nagging  
>> IOhannes :)
>
>
> bit i really don't have any idea about jack-on-osx...
>
> anyhow, a good start would be to find out where the actual  
> processing power is spent by using a profiler...


It seems that when the audio gets turned off, then Pd is still  
executing Jack calls.  After launching Pd, turning off the DSP, then  
off, then this is taking 80% of the time that Pd is running:

+ 81.4%, __bzero, libSystem.B.dylib
| + 80.9%, process, pd
| | + 80.9%, Jack::JackClient::Execute(), Jackmp
| | | + 80.9%, Jack::JackPosixThread::ThreadHandler(void*), Jackmp
| | | | + 80.9%, _pthread_start, libSystem.B.dylib
| | | | |   80.9%, thread_start, libSystem.B.dylib

More info in the bug report:

https://sourceforge.net/tracker/index.php?func=detail&aid=2791638&group_id=55736&atid=478070

.hc

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