ALSA midi patch (Re: [PD] best linux system for using Pd just now

Tim Blechmann TimBlechmann at
Wed Mar 23 11:56:28 CET 2005

> I just found one courious thing about ALSA, it seems that they changed
> the behaviour of how midi events are allocated. This means that if you
> have an old ALSA version, then there is a missing
> "snd_seq_event_free()" in sys_poll_midi(). With the newer version the
> MIDI events shouldn't be freed. Which version of ALSA do you have ?
this might be an explanation ... the machine was running a knoppix 3.6
hd install ... not sure, which alsa it was using ...

> How long does it take for you until Pd crashes ?
about 10 to 20 minutes, sometimes only a few minutes...

> PS: You can debug memory leaks easily using valgrind.
what's how i found it ;-)

cheers ... tim

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