On Thu, Jul 13, 2023 at 10:47:43AM +0200, Takashi Iwai wrote: > Mark Brown wrote: > > # default.time3.0.0.0.PLAYBACK - 44.1kHz stereo large periods > > # default.time3.0.0.0.PLAYBACK hw_params.RW_INTERLEAVED.S16_LE.44100.2.16383.131064 sw_params.131064 > > not ok 10 default.time3.0.0.0.PLAYBACK > > # time mismatch: expected 2000ms got 2229 > > reliably (the actual time drifts by a few ms). The other boards I've > > got coverage of seem fine, and I didn't check any broader CI yet. > Interesting. With the current patch, we rather extended the margin in > proportion; formerly 4 sec +/- 0.1s, now 2 sec +/- 0.1s. And it > exceeded out of sudden. Right. > I guess this rather caught a problem of the driver itself. Well, there's doubtless something driver/hardware related going on but I'm not sure if it's a problem there or not. The results from the 4s runtime were: # default.time3.0.0.0.PLAYBACK - 44.1kHz stereo large periods # default.time3.0.0.0.PLAYBACK hw_params.RW_INTERLEAVED.S16_LE.44100.2.16383.131064 sw_params.131064 ok 10 default.time3.0.0.0.PLAYBACK so the same buffer sizes and so on, and the period size is only 10ms unless I miscalculated which should be quite a long way off from the 100ms of margin we give ourselves. It does seem a little suspect that it's the large periods test that's falling over though.
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