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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - protocol-native: I get endless underruns when I playback when alsa buffer size is small"
href="https://bugs.freedesktop.org/show_bug.cgi?id=84878#c18">Comment # 18</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - protocol-native: I get endless underruns when I playback when alsa buffer size is small"
href="https://bugs.freedesktop.org/show_bug.cgi?id=84878">bug 84878</a>
from <span class="vcard"><a class="email" href="mailto:superquad.vortex2@gmail.com" title="Raymond <superquad.vortex2@gmail.com>"> <span class="fn">Raymond</span></a>
</span></b>
<pre>
not only hwptr not icrement by dma brust
the time elasped varies from 8 to 18 for one frame which is quite unstable
us-last_us=399781389341 now_us-start_us=27 time_us-start_us=18
time_us-last_time=399781389332 time_us-start_time=7 Available: 13
loop iteration: 0
now_us-last_us=24 now_us-start_us=51 time_us-start_us=45
time_us-last_time=27 time_us-start_time=34 Available: 22 loop
iteration: 1
now_us-last_us=19 now_us-start_us=70 time_us-start_us=64
time_us-last_time=19 time_us-start_time=53 Available: 29 loop
iteration: 2
now_us-last_us=18 now_us-start_us=88 time_us-start_us=82
time_us-last_time=18 time_us-start_time=71 Available: 36 loop
iteration: 3
now_us-last_us=19 now_us-start_us=107 time_us-start_us=101
time_us-last_time=19 time_us-start_time=90 Available: 43 loop
iteration: 4
now_us-last_us=18 now_us-start_us=125 time_us-start_us=119
time_us-last_time=18 time_us-start_time=108 Available: 50 loop
iteration: 5
now_us-last_us=18 now_us-start_us=143 time_us-start_us=137
time_us-last_time=18 time_us-start_time=126 Available: 57 loop
iteration: 6
now_us-last_us=17 now_us-start_us=160 time_us-start_us=154
time_us-last_time=17 time_us-start_time=143 Available: 63 loop
iteration: 7
now_us-last_us=18 now_us-start_us=178 time_us-start_us=172
time_us-last_time=18 time_us-start_time=161 Available: 70 loop
iteration: 8
now_us-last_us=18 now_us-start_us=196 time_us-start_us=190
time_us-last_time=18 time_us-start_time=179 Available: 71 loop
iteration: 9
now_us-last_us=17 now_us-start_us=213 time_us-start_us=207
time_us-last_time=17 time_us-start_time=196 Available: 72 loop
iteration: 10
now_us-last_us=18 now_us-start_us=231 time_us-start_us=225
time_us-last_time=18 time_us-start_time=214 Available: 73 loop
iteration: 11
now_us-last_us=17 now_us-start_us=248 time_us-start_us=242
time_us-last_time=17 time_us-start_time=231 Available: 74 loop
iteration: 12
now_us-last_us=18 now_us-start_us=266 time_us-start_us=260
time_us-last_time=18 time_us-start_time=249 Available: 75 loop
iteration: 13
now_us-last_us=17 now_us-start_us=283 time_us-start_us=277
time_us-last_time=17 time_us-start_time=266 Available: 76 loop
iteration: 14
now_us-last_us=9 now_us-start_us=309 time_us-start_us=304
time_us-last_time=10 time_us-start_time=293 Available: 77 loop
iteration: 16
now_us-last_us=18 now_us-start_us=327 time_us-start_us=321
time_us-last_time=17 time_us-start_time=310 Available: 78 loop
iteration: 17
now_us-last_us=9 now_us-start_us=354 time_us-start_us=349
time_us-last_time=11 time_us-start_time=338 Available: 79 loop
iteration: 19
now_us-last_us=18 now_us-start_us=372 time_us-start_us=366
time_us-last_time=17 time_us-start_time=355 Available: 80 loop
iteration: 20
now_us-last_us=17 now_us-start_us=389 time_us-start_us=383
time_us-last_time=17 time_us-start_time=372 Available: 81 loop
iteration: 21
now_us-last_us=8 now_us-start_us=415 time_us-start_us=410
time_us-last_time=9 time_us-start_time=399 Available: 82 loop
iteration: 23
now_us-last_us=18 now_us-start_us=433 time_us-start_us=427
time_us-last_time=17 time_us-start_time=416 Available: 83 loop
iteration: 24
now_us-last_us=17 now_us-start_us=450 time_us-start_us=444
time_us-last_time=17 time_us-start_time=433 Available: 84 loop
iteration: 25
now_us-last_us=9 now_us-start_us=477 time_us-start_us=471
time_us-last_time=9 time_us-start_time=460 Available: 85 loop
iteration: 27
now_us-last_us=18 now_us-start_us=495 time_us-start_us=489
time_us-last_time=18 time_us-start_time=478 Available: 86 loop
iteration: 28</pre>
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