Comment 72 for bug 996906

When I start PA without tsched=0, it's ALSA setup is weird:

Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: Control: PCM Playback Volume
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: min_dB: -51
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: max_dB: 0
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: resolution: 256
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: Its setup is:
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: stream : PLAYBACK
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: access : MMAP_INTERLEAVED
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: format : S16_LE
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: subformat : STD
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: channels : 2
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: rate : 44100
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: exact rate : 44100 (44100/1)
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: msbits : 16
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: buffer_size : 88192
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: period_size : 44096
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: period_time : 999909
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: tstamp_mode : ENABLE
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: period_step : 1
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: avail_min : 87310
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: period_event : 0
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: start_threshold : -1
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: stop_threshold : 6205960286516543488
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: silence_threshold: 0
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: silence_size : 0
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: boundary : 6205960286516543488
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: Slave: Hardware PCM card 0 'HDA Intel PCH' device 0 subdevice 0
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: Its setup is:
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: stream : PLAYBACK
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: access : MMAP_INTERLEAVED
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: format : S16_LE
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: subformat : STD
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: channels : 2
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: rate : 44100
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: exact rate : 44100 (44100/1)
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: msbits : 16
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: buffer_size : 88192
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: period_size : 44096
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: period_time : 999909
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: tstamp_mode : ENABLE
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: period_step : 1
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: avail_min : 87310
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: period_event : 0
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: start_threshold : -1
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: stop_threshold : 6205960286516543488
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: silence_threshold: 0
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: silence_size : 0
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: boundary : 6205960286516543488
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: appl_ptr : 0
Apr 10 09:46:52 work pulseaudio[5161]: [pulseaudio] alsa-util.c: hw_ptr : 0

Why does period size lack 4 bytes to be exactly 1 second long?