Re: [PATCH]sched: Isochronous class v2 for unprivileged soft rt scheduling

[Con Kolivas]

Jack O'Quin wrote:
> Neither run exhibits reliable audio performance.  There is some low
> latency performance problem with your system.  Maybe ReiserFS is
> causing trouble even with logging turned off.  Perhaps the problem is
> somewhere else.  Maybe some device is misbehaving.
>
> Until you solve this problem, beware of drawing conclusions.

The idea is to get equivalent performance to SCHED_FIFO. The results 
show that much, and it is 100 times better than unprivileged 
SCHED_NORMAL. The fact that this is an unoptimised normal desktop 
environment means that the conclusion we _can_ draw is that SCHED_ISO is 
as good as SCHED_FIFO for audio on the average desktop. I need someone 
with optimised hardware setup to see if it's as good as SCHED_FIFO in 
the critical setup.

I'm actually not an audio person and have no need for such a setup, but 
I can see how linux would benefit from such support... ;)

Cheers,
Con

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