the minimum period bytes of snd-hda-intel is 128
the minimum period time at 48000Hz for 2 channels 16 bits is about 0.66
ms , it is unlikely for pulse plugin to support latency 0.5 ms
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [pulseaudio]
protocol-native.c: Requested latency=0.00 ms, Received latency=0.50 ms
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [pulseaudio]
memblockq.c: memblockq requested: maxlength=4194304, tlength=15552, base=8,
prebuf=0, minreq=7680 maxrewind=0
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [pulseaudio]
memblockq.c: memblockq sanitized: maxlength=4194304, tlength=15552, base=8,
prebuf=0, minreq=7680 maxrewind=0
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [pulseaudio]
protocol-native.c: Final latency 41.00 ms = 0.50 ms + 2*20.00 ms + 0.50 ms
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [alsa-sink]
alsa-sink.c: Cutting sleep time for the initial iterations by half.
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [alsa-sink]
alsa-sink.c: Latency set to 0.50ms
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [alsa-sink]
alsa-sink.c: hwbuf_unused=65440
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [alsa-sink]
alsa-sink.c: setting avail_min=16373
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [alsa-sink]
alsa-sink.c: Requesting rewind due to latency change.
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [alsa-sink]
alsa-sink.c: Requested to rewind 65536 bytes.m
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [alsa-sink]
alsa-sink.c: Limited to 65088 bytes.
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [alsa-sink]
alsa-sink.c: before: 16272
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [alsa-sink]
alsa-sink.c: after: 16272
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [alsa-sink]
alsa-sink.c: Rewound 65088 bytes.
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [alsa-sink]
sink.c: Processing rewind...
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [alsa-sink]
sink-input.c: Have to rewind 65088 bytes on render memblockq.
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [alsa-sink]
source.c: Processing rewind...
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [alsa-sink]
alsa-sink.c: Cutting sleep time for the initial iterations by half.
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [pulseaudio]
module-stream-restore.c: Storing volume/mute/device for stream
sink-input-by-application-id:org.VideoLAN.VLC.
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.452| 0.000) [alsa-sink]
alsa-sink.c: Cutting sleep time for the initial iterations by half.
Oct 11 22:36:37 pulseaudio[1761]: last message repeated 4 times
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.453| 0.000) [alsa-sink]
alsa-sink.c: Increasing minimal latency to 1.00 ms
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.453| 0.000) [alsa-sink]
alsa-sink.c: Latency set to 1.00ms
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.453| 0.000) [alsa-sink]
alsa-sink.c: hwbuf_unused=65344
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.453| 0.000) [alsa-sink]
alsa-sink.c: setting avail_min=16361
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.453| 0.000) [alsa-sink]
protocol-native.c: max_request changed, trying to update from 15552 to 15744.
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.453| 0.000) [alsa-sink]
protocol-native.c: Notifying client about increased tlength
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.453| 0.000) [alsa-sink]
alsa-sink.c: Latency set to 1.00ms
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.453| 0.000) [alsa-sink]
alsa-sink.c: hwbuf_unused=65344
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.453| 0.000) [alsa-sink]
alsa-sink.c: setting avail_min=16361
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.473| 0.019) [alsa-sink]
protocol-native.c: Requesting rewind due to end of underrun.
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.473| 0.000) [alsa-sink]
protocol-native.c: Requesting rewind due to end of underrun.
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.474| 0.001) [alsa-sink]
protocol-native.c: Requesting rewind due to end of underrun.
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.475| 0.000) [alsa-sink]
protocol-native.c: Requesting rewind due to end of underrun.
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.476| 0.000) [alsa-sink]
protocol-native.c: Requesting rewind due to end of underrun.
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.477| 0.001) [alsa-sink]
protocol-native.c: Requesting rewind due to end of underrun.
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.477| 0.000) [alsa-sink]
protocol-native.c: Requesting rewind due to end of underrun.
Oct 11 22:36:37 varzea pulseaudio[1761]: ( 14.478| 0.000) [alsa-sink]
protocol-native.c: Requesting rewind due to en