[PD] slow midi on osX / pd-0.49

cyrille henry ch at chnry.net
Tue Apr 9 20:29:52 CEST 2019

I noticed a change between pd-extended and pd 0.49 on OSX regarding midi out.

My test patch is a 20ms metro that send 512 random midi control change.
This patch works perfectly under linux, with all pd version. (The usb-midi device can handle it without any problem.)
On osX, I don't have any problem with pd extended. With pd 0.49, I can't send that much data. pd is buffering the midi message : when I stop the metro it keep sending data for few seconds or more before the buffer is empty.

So, is there anything I can do to make 0.49 faster?
Should I fill a bug report?

(if you are wondering why I need to send so much midi data, it's because I use a MIDI to DMX device to control a huge amount of led. I use this interface for 15 years under linux, so I know there are no problem on this side.)


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