[PD] pd eating cpu on os x

Thomas Grill gr at grrrr.org
Tue Apr 8 23:53:58 CEST 2008


>
> here's the first 20 processes, is there anything that should worry me?
>

I don't think so... you could compare this to Max/MSP or other audio  
applications.
In my experience using jack imposes additional load, since it will be  
just another layer between the application and coreaudio.
gr~~~

> 	14.7%	14.7%	mach_kernel	ml_set_interrupts_enabled	
> 	12.3%	12.3%	AudioToolbox  
> Resampler2::ConvertAltivec_SmallIntegerRatio(float*, float*,  
> unsigned long, int)	
> 	6.1%	6.1%	com.apple.driver.AppleHDA	SInt16ToFloat32	
> 	5.0%	5.0%	com.apple.driver.DspFuncLib	DspFuncOrgEQ::_EQBoth 
> (float*, float*, unsigned long, unsigned long)	
> 	3.5%	3.5%	mach_kernel	lo_mach_scall	
> 	1.9%	1.9%	com.apple.driver.DspFuncLib	DspFuncVolume::process 
> (unsigned long, unsigned long)	
> 	1.4%	1.4%	mach_kernel	mutex_lock	
> 	1.2%	1.2%	CoreAudio	IOA_Time::GetCurrentTime(AudioTimeStamp&) const	
> 	1.2%	1.2%	mach_kernel	lo_alltraps	
> 	1.1%	1.1%	IOKit	iokit_user_client_trap	
> 	1.1%	1.1%	commpage [libSystem.B.dylib]	__spin_lock	
> 	1.1%	1.1%	CoreAudio	AUGenericOutputEntry	
> 	1.0%	1.0%	libSystem.B.dylib	semaphore_timedwait_signal_trap	
> 	0.9%	0.9%	libSystem.B.dylib	semaphore_wait_trap	
> 	0.9%	0.9%	libSystem.B.dylib	_pthread_cond_wait	
> 	0.9%	0.9%	commpage [libSystem.B.dylib]	__nanotime	
> 	0.9%	0.9%	mach_kernel	mutex_unlock	
> 	0.8%	0.8%	commpage [libSystem.B.dylib]	__memcpy	
> 	0.7%	0.7%	mach_kernel	lck_mtx_lock	
> 	0.7%	0.7%	AudioToolbox	Resampler2::PushConvert(float*, float*,  
> float*, float*, unsigned long&, unsigned long&, unsigned long,  
> unsigned long)	
>

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