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

[bugzilla-daemon at freedesktop.org]

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

--- Comment #34 from Adam Goode <adam at spicenitz.org> ---
======= testing hw:1 =======
min_period_size: 6 frames, dir: 0
FIFO size is 0
Hardware PCM card 1 'Scarlett 18i8 USB' device 0 subdevice 0
Its setup is:
  stream       : PLAYBACK
  access       : RW_INTERLEAVED
  format       : S32_LE
  subformat    : STD
  channels     : 8
  rate         : 48000
  exact rate   : 48000 (48000/1)
  msbits       : 32
  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: 66, loop iteration: 9066, diff: 9066, timestamp diff: 1395 usec
Available: 132, loop iteration: 11289, diff: 2223, timestamp diff: 1622 usec
Available: 192, loop iteration: 13351, diff: 2062, timestamp diff: 1625 usec
Available: 258, loop iteration: 15600, diff: 2249, timestamp diff: 1625 usec
Available: 325, loop iteration: 17822, diff: 2222, timestamp diff: 1625 usec
Available: 385, loop iteration: 20092, diff: 2270, timestamp diff: 1626 usec
Available: 451, loop iteration: 22045, diff: 1953, timestamp diff: 1625 usec
Available: 512, loop iteration: 24239, diff: 2194, timestamp diff: 1630 usec
Available: 578, loop iteration: 26305, diff: 2066, timestamp diff: 1619 usec
Available: 644, loop iteration: 28447, diff: 2142, timestamp diff: 1626 usec
Available: 705, loop iteration: 30674, diff: 2227, timestamp diff: 1625 usec
Available: 771, loop iteration: 32561, diff: 1887, timestamp diff: 1374 usec
Available: 832, loop iteration: 34626, diff: 2065, timestamp diff: 1500 usec
Available: 898, loop iteration: 36533, diff: 1907, timestamp diff: 1376 usec
Available: 964, loop iteration: 38592, diff: 2059, timestamp diff: 1499 usec
Available: 1025, loop iteration: 40641, diff: 2049, timestamp diff: 1500 usec
Available: 1091, loop iteration: 42522, diff: 1881, timestamp diff: 1375 usec
Available: 1157, loop iteration: 44545, diff: 2023, timestamp diff: 1501 usec
Available: 1218, loop iteration: 46425, diff: 1880, timestamp diff: 1376 usec
Available: 1284, loop iteration: 48473, diff: 2048, timestamp diff: 1498 usec
Available: 1344, loop iteration: 50540, diff: 2067, timestamp diff: 1501 usec
Available: 1411, loop iteration: 52418, diff: 1878, timestamp diff: 1374 usec
Available: 1477, loop iteration: 54499, diff: 2081, timestamp diff: 1501 usec
Available: 1537, loop iteration: 56370, diff: 1871, timestamp diff: 1375 usec
Available: 1603, loop iteration: 58444, diff: 2074, timestamp diff: 1498 usec
Available: 1664, loop iteration: 60506, diff: 2062, timestamp diff: 1501 usec
Available: 1730, loop iteration: 62391, diff: 1885, timestamp diff: 1375 usec
Available: 1796, loop iteration: 64458, diff: 2067, timestamp diff: 1500 usec
Available: 1857, loop iteration: 66513, diff: 2055, timestamp diff: 1500 usec
Available: 1923, loop iteration: 68382, diff: 1869, timestamp diff: 1376 usec
Available: 1984, loop iteration: 70456, diff: 2074, timestamp diff: 1507 usec
Available: 2050, loop iteration: 72343, diff: 1887, timestamp diff: 1369 usec
Available: 2116, loop iteration: 74410, diff: 2067, timestamp diff: 1499 usec
Available: 2177, loop iteration: 76487, diff: 2077, timestamp diff: 1499 usec
Available: 2243, loop iteration: 78392, diff: 1905, timestamp diff: 1375 usec
Available: 2304, loop iteration: 80476, diff: 2084, timestamp diff: 1500 usec
Available: 2370, loop iteration: 82365, diff: 1889, timestamp diff: 1375 usec
Available: 2436, loop iteration: 84412, diff: 2047, timestamp diff: 1500 usec
Available: 2496, loop iteration: 86473, diff: 2061, timestamp diff: 1500 usec
Available: 2563, loop iteration: 88343, diff: 1870, timestamp diff: 1375 usec
Available: 2629, loop iteration: 90401, diff: 2058, timestamp diff: 1501 usec
Available: 2689, loop iteration: 92306, diff: 1905, timestamp diff: 1376 usec
Available: 2756, loop iteration: 94387, diff: 2081, timestamp diff: 1498 usec
Available: 2816, loop iteration: 96466, diff: 2079, timestamp diff: 1500 usec
Available: 2882, loop iteration: 98327, diff: 1861, timestamp diff: 1376 usec
Available: 2949, loop iteration: 100372, diff: 2045, timestamp diff: 1499 usec
Available: 3009, loop iteration: 102248, diff: 1876, timestamp diff: 1376 usec
Available: 3075, loop iteration: 104315, diff: 2067, timestamp diff: 1499 usec
Available: 3136, loop iteration: 106383, diff: 2068, timestamp diff: 1500 usec
Available: 3202, loop iteration: 108278, diff: 1895, timestamp diff: 1376 usec
Available: 3268, loop iteration: 110311, diff: 2033, timestamp diff: 1498 usec
Available: 3329, loop iteration: 112355, diff: 2044, timestamp diff: 1502 usec
Available: 3395, loop iteration: 114259, diff: 1904, timestamp diff: 1374 usec
Available: 3456, loop iteration: 116332, diff: 2073, timestamp diff: 1501 usec
Available: 3522, loop iteration: 118177, diff: 1845, timestamp diff: 1374 usec
Available: 3588, loop iteration: 120240, diff: 2063, timestamp diff: 1500 usec
Available: 3649, loop iteration: 122303, diff: 2063, timestamp diff: 1500 usec
Available: 3715, loop iteration: 124195, diff: 1892, timestamp diff: 1375 usec
Available: 3781, loop iteration: 126258, diff: 2063, timestamp diff: 1500 usec
Available: 3842, loop iteration: 128133, diff: 1875, timestamp diff: 1375 usec
Available: 3908, loop iteration: 130199, diff: 2066, timestamp diff: 1501 usec
Available: 3968, loop iteration: 132231, diff: 2032, timestamp diff: 1499 usec
Available: 4034, loop iteration: 134139, diff: 1908, timestamp diff: 1375 usec

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