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?