[linux-audio-dev] maximum ports -problem

[Brett McCoy]

Steve Harris wrote:

> back of the envelope maths:
> 
> soundcard ports are always assigned,
> even if theres nothing connected:                   22
> hydrogen, 32*2:                                     64
> ardour uses something like 4 per mono track,
> plus 2 more?                                        34
> 
> so thats getting to 120ish, so you could easily have run out.

Even if I am not using them all?  I calculate I had maybe 12 - 15 
actually allocated ( will try to verify this tonight when I am back in 
the studio )

>>After I restarted jackd (and not making any changes in qjackctl), 
>>Hydrogen refused to start (it would segfault on startup, but if I 
>>started Hydrogen without jackd it would startup fine), and when I 
>>reopened the same session in Ardour, the entire screen would freeze 
>>(except the mouse).
> 
> 
> Thats not good, and I dont know why its doing tht offhand, it could be
> because theres some stale files or pipes in your jack tmp directory?

Yeah, that's what I was wondering, or perhaps a zombied process

> strace-ing or gdb-ing hydrogen might give a clue. 

I stared working at that but had to give up the hunt as it was very late 
and I needed sleep. :-)

-- Brett
-----------
Programmer by day, Guitarist by Night
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