[PD] Startup times to run Pd patch on Raspberry Pi

[Winfried Ritsch]

Am Montag, 19. Oktober 2020, 11:44:20 CEST schrieb Roman Haefeli:
> On Mon, 2020-10-19 at 11:08 +0200, Winfried Ritsch wrote:
> > algo at DIYasb5:~$ systemd-analyze blame
> > 
> >          10.009s jackd.service
> 
> That seems long. How does the systemd unit file looks like? It appears
> jackd fires up quicker (<1s) on my old RPi 3, but then I might be
> fooled by the fact that it has been loaded before and it would require
> more time after boot.
> 
thanks for the info,
 the problem was not really correct addressed:

In experiments I saw it will take 10 seconds to savely start pd after jackd
So I put an 10s in jackd.service:
   ExecStartPost=/bin/sleep ${WAIT_AFTER_START}

The problem is jackd either provides dbus or socket-connection socket to late 
or the connection is not established because some parameters didnt stabilize, 
such as sound card binding with samplerate... but I didnt try to hard to find 
the reason, since for this purpose it was sufficient. 

But for new applications (streaming box) I want a faster boot up 

mfg
  winfried 



> Roman


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