Con Kolivas <[EMAIL PROTECTED]> writes:
There are two things that the SCHED_ISO you tried is not that
SCHED_FIFO is - As you mentioned there is no priority support, and it
is RR, not FIFO. I am not sure whether it is one and or the other
responsible. Both can be added to SCHED_ISO. I haven't looked at jackd
code but it should be trivial to change SCHED_FIFO to SCHED_RR to see
if RR with priority support is enough or not.
Sure, that's easy. I didn't do it because I assumed it would not matter. Since the RR scheduling quantum is considerably longer than the basic 1.45msec audio cycle, it should work exactly the same. I'll cobble together a JACK version to try that for you.
If you already know the audio cycle is much less than 10ms then there isn't much point trying it.
Second the patch I sent you is fine for testing; I was hoping you would try it. What you can't do with it is spawn lots of userspace apps safely SCHED_ISO with it - it will crash, but it not take down your hard disk. I've had significantly better results with that patch so far. Then we cn take it from there.
Sorry. I took you literally when you said it was not yet ready to try. This would be the isoprio3 patch you posted?
Yes it is.
Do I have to use 2.6.11-rc1-mm2, or will it work with 2.6.11-rc1?
It was for mm2, but should patch on an iso2 patched kernel.
Thanks!
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