[pulseaudio-tickets] [Bug 86262] severe underruns with usb audio, works with pa 3.0 - buffer setup seems wrong

Tue Jun 23 18:27:12 PDT 2015

https://bugs.freedesktop.org/show_bug.cgi?id=86262

--- Comment #33 from Adam Goode <adam at spicenitz.org> ---
======= testing hw:3 =======
min_period_size: 48 frames, dir: 0
FIFO size is 0
Hardware PCM card 3 'USB Audio DAC' device 0 subdevice 0
Its setup is:
  stream       : PLAYBACK
  access       : RW_INTERLEAVED
  format       : S16_LE
  subformat    : STD
  channels     : 2
  rate         : 48000
  exact rate   : 48000 (48000/1)
  msbits       : 16
  buffer_size  : 4096
  period_size  : 64
  period_time  : 1333
  tstamp_mode  : NONE
  tstamp_type  : MONOTONIC
  period_step  : 1
  avail_min    : 64
  period_event : 0
  start_threshold  : 64
  stop_threshold   : 4096
  silence_threshold: 0
  silence_size : 0
  boundary     : 4611686018427387904
  appl_ptr     : 0
  hw_ptr       : 0
Playing silence
Available: 0, loop iteration: 0, diff: 0, timestamp diff: 3 usec
Available: 96, loop iteration: 4668, diff: 4668, timestamp diff: 2095 usec
Available: 144, loop iteration: 5822, diff: 1154, timestamp diff: 1997 usec
Available: 192, loop iteration: 6948, diff: 1126, timestamp diff: 2000 usec
Available: 288, loop iteration: 8128, diff: 1180, timestamp diff: 2007 usec
Available: 336, loop iteration: 9749, diff: 1621, timestamp diff: 1993 usec
Available: 384, loop iteration: 11966, diff: 2217, timestamp diff: 2000 usec
Available: 480, loop iteration: 14223, diff: 2257, timestamp diff: 2001 usec
Available: 528, loop iteration: 16487, diff: 2264, timestamp diff: 1998 usec
Available: 576, loop iteration: 18757, diff: 2270, timestamp diff: 1999 usec
Available: 672, loop iteration: 21024, diff: 2267, timestamp diff: 2001 usec
Available: 720, loop iteration: 22165, diff: 1141, timestamp diff: 1002 usec
Available: 768, loop iteration: 23468, diff: 1303, timestamp diff: 996 usec
Available: 864, loop iteration: 26200, diff: 2732, timestamp diff: 2001 usec
Available: 912, loop iteration: 27544, diff: 1344, timestamp diff: 999 usec
Available: 960, loop iteration: 28906, diff: 1362, timestamp diff: 1001 usec
Available: 1056, loop iteration: 31621, diff: 2715, timestamp diff: 1999 usec
Available: 1104, loop iteration: 32941, diff: 1320, timestamp diff: 1001 usec
Available: 1152, loop iteration: 34289, diff: 1348, timestamp diff: 998 usec
Available: 1248, loop iteration: 37017, diff: 2728, timestamp diff: 2000 usec
Available: 1296, loop iteration: 38375, diff: 1358, timestamp diff: 1000 usec
Available: 1344, loop iteration: 39762, diff: 1387, timestamp diff: 1000 usec
Available: 1440, loop iteration: 42543, diff: 2781, timestamp diff: 2000 usec
Available: 1488, loop iteration: 43929, diff: 1386, timestamp diff: 1000 usec
Available: 1536, loop iteration: 45319, diff: 1390, timestamp diff: 1000 usec
Available: 1632, loop iteration: 48078, diff: 2759, timestamp diff: 1999 usec
Available: 1680, loop iteration: 49462, diff: 1384, timestamp diff: 1001 usec
Available: 1728, loop iteration: 50850, diff: 1388, timestamp diff: 999 usec
Available: 1824, loop iteration: 53593, diff: 2743, timestamp diff: 2000 usec
Available: 1872, loop iteration: 54977, diff: 1384, timestamp diff: 1000 usec
Available: 1920, loop iteration: 56330, diff: 1353, timestamp diff: 1001 usec
Available: 2016, loop iteration: 59106, diff: 2776, timestamp diff: 2000 usec
Available: 2064, loop iteration: 60488, diff: 1382, timestamp diff: 999 usec
Available: 2112, loop iteration: 61875, diff: 1387, timestamp diff: 1001 usec
Available: 2208, loop iteration: 64655, diff: 2780, timestamp diff: 1999 usec
Available: 2256, loop iteration: 66044, diff: 1389, timestamp diff: 1000 usec
Available: 2304, loop iteration: 67421, diff: 1377, timestamp diff: 1004 usec
Available: 2400, loop iteration: 70057, diff: 2636, timestamp diff: 1998 usec
Available: 2448, loop iteration: 71411, diff: 1354, timestamp diff: 1001 usec
Available: 2496, loop iteration: 72768, diff: 1357, timestamp diff: 999 usec
Available: 2592, loop iteration: 75473, diff: 2705, timestamp diff: 2000 usec
Available: 2640, loop iteration: 76791, diff: 1318, timestamp diff: 999 usec
Available: 2688, loop iteration: 78138, diff: 1347, timestamp diff: 1000 usec
Available: 2784, loop iteration: 80900, diff: 2762, timestamp diff: 1999 usec
Available: 2832, loop iteration: 82287, diff: 1387, timestamp diff: 1001 usec
Available: 2880, loop iteration: 83676, diff: 1389, timestamp diff: 999 usec
Available: 2976, loop iteration: 86399, diff: 2723, timestamp diff: 2000 usec
Available: 3024, loop iteration: 87786, diff: 1387, timestamp diff: 1000 usec
Available: 3072, loop iteration: 89174, diff: 1388, timestamp diff: 1000 usec
Available: 3168, loop iteration: 91957, diff: 2783, timestamp diff: 2000 usec
Available: 3216, loop iteration: 93329, diff: 1372, timestamp diff: 1003 usec
Available: 3264, loop iteration: 94681, diff: 1352, timestamp diff: 997 usec
Available: 3360, loop iteration: 97451, diff: 2770, timestamp diff: 2000 usec
Available: 3408, loop iteration: 98817, diff: 1366, timestamp diff: 1000 usec
Available: 3456, loop iteration: 100187, diff: 1370, timestamp diff: 1000 usec
Available: 3552, loop iteration: 102926, diff: 2739, timestamp diff: 2000 usec
Available: 3600, loop iteration: 104306, diff: 1380, timestamp diff: 1000 usec
Available: 3648, loop iteration: 105690, diff: 1384, timestamp diff: 1000 usec
Available: 3744, loop iteration: 108473, diff: 2783, timestamp diff: 2000 usec
Available: 3792, loop iteration: 109865, diff: 1392, timestamp diff: 1002 usec
Available: 3840, loop iteration: 111248, diff: 1383, timestamp diff: 1001 usec
Available: 3936, loop iteration: 113968, diff: 2720, timestamp diff: 1999 usec
Available: 3984, loop iteration: 115335, diff: 1367, timestamp diff: 1000 usec
Available: 4032, loop iteration: 116693, diff: 1358, timestamp diff: 1000 usec

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