On Mon, Mar 13, 2023 at 10:20:01PM +0100, Giso Grimm wrote:
I am not an expert on USB driver / kernel
implementation, but measurements
show that the timing of jack callbacks using USB sound cards is not regular.
When calculating period time histograms I usually get two or three peaks,
only on rare occasions (e.g., 1ms block sizes, but not with all sound cards)
only a single peak. Often, none of the peaks is related to a 1 ms grid.
Did some test here, results at
<http://kokkinizita.linuxaudio.org/linuxaudio/timing/results.html>
Ciao,
--
FA