24.10.2014 12:06, David Henningsson wrote: > On Ubuntu, since before my time, this has been the default: > > default-fragments = 8 > default-fragment-size-msec = 10 > > ...so 8 x 10 = 80 ms. If you end up with 5 x 4 = 20 ms, I think that's a > bit too short/sensitive, we should then increase the number of periods > to 16 or at least 8 in the same go, so you'll end up with something > above 50 ms in total. I think this could help against underruns caused > by inoptimal scheduling. Unfortunately, what seems to matter (contrary to my initial mail) is the total buffer size, which needs to be less than 34 ms. I don't know where this magic number comes from. 4 fragments 5 ms each = works 4 fragments 8 ms each = works 4 fragments 9 ms each = does not work 2 fragments 16 ms each = works 3 fragments 16 ms each = does not work 3 fragments 11 ms each = works 3 fragments 12 ms each = does not work 2 fragments 17 ms each = does not work 6 fragments 5 ms each = works 7 fragments 5 ms each = does not work -- Alexander E. Patrakov
