According to the code, it should be being called.

Original Message:
-----------------
From: Istvan Varga istvan_v@mailbox.hu
Date: Sat, 22 Jan 2005 20:53:58 +0100
To: csound-devel@lists.sourceforge.net
Subject: Re: [Cs-dev] More csound5 reports


Iain Duncan wrote:

> Bad news is that it really isn't as performance solid as the Varga build
> of 4.23.24 For whatever reason, it seems like the --sched option isn't
> really doing much.

Is set_rt_priority() actually called in csound5 ? If you run csound
with --sched but without -d and -odac/-odevaudio then it should
print an error message; if that does not happen, the function is
probably not called.


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gogins@pipeline.com wrote:

> According to the code, it should be being called.

I'll try to build csound5 now; it seems to compile so far, although
FLTK was not found for some reason, despite the fact that I do have
it installed:
   rpm -qa | grep fltk
   fltk-1.1.4-82.1
   fltk-devel-1.1.4-82.1
Well, the compile finished. Typing
   su -c './csound --sched oscbnk.{orc,sco}'
prints the error message as it should. Now trying
   su -c './csound --sched -d -o dac -n oscbnk.{orc,sco}'
works, and hangs the system until the compile is finished (that is
the correct behavior), so my tests so far show that --sched is
functional.
There may be more complex problems related to threading if FLTK
is used (could not test it - see above); perhaps not all threads
run with the high priority.
It is also possible that the skips in the audio were caused in some
way by PortAudio, or the blocking I/O wrapper code.

I did notice strange problems with the audio files written
(including the case of not writing any data at all) though, so
sound I/O in csound5 probably still needs to be improved.


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