[PD] How to reduce CPU use on unused subpatches-abstracts?

[Roman Haefeli]

Hi Mario

Check [switch~] and its help patch.

Roman


On Mon, 2013-08-05 at 09:03 -0300, Mario Mey wrote:
> Hi, there... I really need some help.
> 
> I'm working on a looper-multi-effects (big) patch. It has more than, 
> more or less, 100 stereo FXs. They are all inside the patch as 
> abstracts. But, to avoid them to consume CPU, each one has a [switch~ 0] 
> if it is not working. So, there're only two FX at a time, where the DSP 
> is on. Something like this:
> 
> Main patch:
> 
> adc~
> |     \
> |     [s $0-pre-r]
> [s $0-pre-l]
> 
> [catch~ $0-post-l]
> |         [catch~ $0-post-r]
> |        /
> [dac~]
> 
> (the same for
> 
> Each FX as file-abstracts (using [fx1 $0] to call them) inside the main 
> patch:
> 
> [r $1-pre-l]       [r $1-pre-r]
> |                  /
> [The-FX-itself.....]
> |                  \
> [throw~ $1-post-l] [throw~ $1-post-r]
> 
> 
> [0(     [1(
> |       /
> [switch~]
> 
> 
> This technics DOES work very well.  Buuut... when having 100 FX at the 
> same time (even not working), the CPU increase 15-20%. I repeat, 
> there're only two FX working at the time. The rest are "turned-off".
> 
> For now, the CPU use is:
> 
> Ready-to-use, 2 FXs on, DSP on: 47%
> Recorded and playing 8 stereo-banks, 2 FXs being used, DSP on: 60 - 62% 
> (I have quite a few XRUNS)
> Ready-to-use, 2 FXs on, DSP off: 7%
> 
> As you can see, the non-signal processing is very low.
> 
> What I think is that each FX is working when receiving and/or throwing 
> signal (200 [receive~] and [throw~] objects)... even they are sending 
> and/or processing nothing.
> 
> Is there any other way to connect all the FXs to the main patch and to 
> have a lower CPU consumption?
> 
> Maybe [inlet~] and [outlet~] consume less CPU? (I should connect all the 
> FX at hand... or find a aumotated way to do it)
> 
> Thanks a lot.
> 
> 
> 
> 
> Mario Mey
> 
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