[PD] MIDI timing FIFO overflowed receiving sysex (pt.2)

Dan Wilcox danomatika at gmail.com
Sun Jun 17 00:00:03 CEST 2018

a couple things:

* Do you have a patch or set up that causes this?

* Does it happen only based on a certain length or does it only happen to a certain message?

* Can you send me the raw byte values for the message?

> On Jun 16, 2018, at 9:02 AM, pd-list-request at lists.iem.at wrote:
> From: Mario Buoninfante <mario.buoninfante at gmail.com <mailto:mario.buoninfante at gmail.com>>
> To: pd-list <pd-list at lists.iem.at <mailto:pd-list at lists.iem.at>>
> Subject: [PD] MIDI timing FIFO overflowed receiving sysex (pt.2)
> Message-ID:
> 	<CAHs=M8RCrCw5t1EO9iS_BKVL3J=6SnRhejxiWxvbWfVwsyU4Ng at mail.gmail.com <mailto:CAHs=M8RCrCw5t1EO9iS_BKVL3J=6SnRhejxiWxvbWfVwsyU4Ng at mail.gmail.com>>
> Content-Type: text/plain; charset="utf-8"
> Hi,
> few months ago I was writing about some issues sending big sysex to Pd.
> Miller suggested the following
> *If you don't mind recompiling Pd, you can control the MIDI queue size
> *>* by editing this line in s_midi.c:
> *> >* #define MIDIQSIZE 1024
> *> >* I think it has to be a power of 2.  You could make it 0x100000,
> for instance
> *>* (a million-ish).
> *> >* To easily recompile Pd on a Mac, install the developer package (compiler
> *>* chain which I think is now called Xcode), open a shell, Cd to
> *>* Pd-x.app/Contents/Resources/src, edit s_midi.c, and type "make".
> *>
> I tried recompiling both on Linux (Ubuntu Studio 16.04) and MacOS (Sierra)
> but unfortunately without any success. I mean, I've been able to recompile
> it, but the issue's still there. moreover I couldn't find s_midi.c in
> *Pd-x.app/Contents/Resources/src*
> so I had to use the source code.
> basically I'm sending (relatively) big sysex to Pd as fast as possible and
> I noticed Pd drops most of them. I'm collecting few hundreds byte on top of
> thousands.
> did I miss something?
> does anyone experienced something like that? any suggestion?
> cheers,
> Mario

Dan Wilcox
@danomatika <http://twitter.com/danomatika>
danomatika.com <http://danomatika.com/>
robotcowboy.com <http://robotcowboy.com/>

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