[pulseaudio-discuss] Glitch-Free Mode
Vallabha Hampiholi
vallabha.pa at googlemail.com
Mon Aug 1 06:48:23 PDT 2011
Hello Experts,
I got the attached log when running PulseAudio 0.9.22 in glitch free mode.
But then I see the following logs in the trace!!
I: source.c: Created source 0 "alsa_output.hw_0.monitor" with sample spec
s16le 2ch 44100Hz and channel map front-left,front-right
I: source.c: device.description = "Monitor of TI81XX EVM"
I: source.c: device.class = "monitor"
I: source.c: device.icon_name = "audio-input-microphone"
I: alsa-sink.c: Using 16.0 fragments of size 8192 bytes (46.44ms), buffer
size is 131072 bytes (743.04ms)
I: alsa-sink.c: Time scheduling watermark is 20.00ms
D: alsa-sink.c: hwbuf_unused=0
D: alsa-sink.c: setting avail_min=31886
D: alsa-util.c: snd_pcm_dump():
My understanding was that when glitch free mode is enabled the NFRAGS of
alsa hardware is reduced to minimum in order to reduce the IRQ's.
But as seen from the logs the NFRAGS is at pretty high value of 16. Is this
behaviour OK??
Is there something I need to do extra?
-Rgds
Vallabha
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N: main.c: Running in system mode, forcibly disabling SHM mode!
N: main.c: Running in system mode, forcibly disabling exit idle time!
D: core-rtclock.c: Timer slack is set to 50 us.
D: core-util.c: setpriority() worked.
I: core-util.c: Successfully gained nice level -11.
I: main.c: Found user 'pulse' (UID 109) and group 'pulse' (GID 114).
W: main.c: Home directory of user 'pulse' is not '/var/run/pulse', ignoring.
I: main.c: Successfully dropped root privileges.
I: main.c: This is PulseAudio 0.9.22
D: main.c: Compilation host: arm-none-linux-gnueabi
D: main.c: Compilation CFLAGS: -fexpensive-optimizations -fomit-frame-pointer -frename-registers -O2 -Wall -W -Wextra -pipe -Wno-long-long -Winline -Wvla -Wno-overlength-strings -Wunsafe-loop-optimizations -Wundef -Wformat=2 -Wlogical-op -Wsign-compare -Wformat-security -Wmissing-include-dirs -Wformat-nonliteral -Wold-style-definition -Wpointer-arith -Winit-self -Wdeclaration-after-statement -Wfloat-equal -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wmissing-declarations -Wmissing-noreturn -Wshadow -Wendif-labels -Wcast-align -Wstrict-aliasing=2 -Wwrite-strings -Wno-unused-parameter -ffast-math -Wp,-D_FORTIFY_SOURCE=2 -fno-common -fdiagnostics-show-option
D: main.c: Running on host: Linux armv7l 2.6.37-rc3 #1 Wed Jul 27 09:55:12 IST 2011
D: main.c: Found 1 CPUs.
I: main.c: Page size is 4096 bytes
D: main.c: Compiled with Valgrind support: no
D: main.c: Running in valgrind mode: no
D: main.c: Running in VM: no
D: main.c: Optimized build: yes
D: main.c: All asserts enabled.
I: main.c: Machine ID is 89908ad0f00641e5ec7d87d200000002.
I: main.c: Using runtime directory /var/run/pulse.
I: main.c: Using state directory /var/lib/pulse.
I: main.c: Using modules directory /usr/lib/pulse-0.9.22/modules.
I: main.c: Running in system mode: yes
W: main.c: OK, so you are running PA in system mode. Please note that you most likely shouldn't be doing that.
W: main.c: If you do it nonetheless then it's your own fault if things don't work as expected.
W: main.c: Please read http://pulseaudio.org/wiki/WhatIsWrongWithSystemMode for an explanation why system mode is usually a bad idea.
W: pid.c: Stale PID file, overwriting.
I: main.c: Fresh high-resolution timers available! Bon appetit!
I: cpu-arm.c: CPU flags: V6 V7 VFP EDSP NEON VFPV3
I: svolume_arm.c: Initialising ARM optimized functions.
D: memblock.c: Using private memory pool with 1024 slots of size 64.0 KiB each, total size is 64.0 MiB, maximum usable slot size is 65496
D: alsa-util.c: Trying hw:0 with SND_PCM_NO_AUTO_FORMAT ...
D: alsa-util.c: Managed to open hw:0
D: alsa-util.c: Maximum hw buffer size is 743 ms
D: alsa-util.c: Set buffer size first (to 88200 samples), period size second (to 88200 samples).
I: alsa-sink.c: Successfully opened device hw:0.
I: alsa-sink.c: Successfully enabled mmap() mode.
I: alsa-sink.c: Successfully enabled timer-based scheduling mode.
I: sink.c: Created sink 0 "alsa_output.hw_0" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right
I: sink.c: alsa.resolution_bits = "16"
I: sink.c: device.api = "alsa"
I: sink.c: device.class = "sound"
I: sink.c: alsa.class = "generic"
I: sink.c: alsa.subclass = "generic-mix"
I: sink.c: alsa.name = ""
I: sink.c: alsa.id = "AIC3X tlv320aic3x-hifi-0"
I: sink.c: alsa.subdevice = "0"
I: sink.c: alsa.subdevice_name = "subdevice #0"
I: sink.c: alsa.device = "0"
I: sink.c: alsa.card = "0"
I: sink.c: alsa.card_name = "TI81XX EVM"
I: sink.c: alsa.long_card_name = "TI81XX EVM"
I: sink.c: device.bus_path = "platform-soc-audio.0"
I: sink.c: sysfs.path = "/devices/platform/soc-audio.0/sound/card0"
I: sink.c: device.string = "hw:0"
I: sink.c: device.buffering.buffer_size = "131072"
I: sink.c: device.buffering.fragment_size = "8192"
I: sink.c: device.access_mode = "mmap+timer"
I: sink.c: device.description = "TI81XX EVM"
I: sink.c: device.icon_name = "audio-card"
I: source.c: Created source 0 "alsa_output.hw_0.monitor" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right
I: source.c: device.description = "Monitor of TI81XX EVM"
I: source.c: device.class = "monitor"
I: source.c: device.icon_name = "audio-input-microphone"
I: alsa-sink.c: Using 16.0 fragments of size 8192 bytes (46.44ms), buffer size is 131072 bytes (743.04ms)
I: alsa-sink.c: Time scheduling watermark is 20.00ms
D: alsa-sink.c: hwbuf_unused=0
D: alsa-sink.c: setting avail_min=31886
D: alsa-util.c: snd_pcm_dump():
D: alsa-util.c: Hardware PCM card 0 'TI81XX EVM' device 0 subdevice 0
D: alsa-util.c: Its setup is:
D: alsa-util.c: stream : PLAYBACK
D: alsa-util.c: access : MMAP_INTERLEAVED
D: alsa-util.c: format : S16_LE
D: alsa-util.c: subformat : STD
D: alsa-util.c: channels : 2
D: alsa-util.c: rate : 44100
D: alsa-util.c: exact rate : 44100 (44100/1)
D: alsa-util.c: msbits : 16
D: alsa-util.c: buffer_size : 32768
D: alsa-util.c: period_size : 2048
D: alsa-util.c: period_time : 46439
D: alsa-util.c: tstamp_mode : ENABLE
D: alsa-util.c: period_step : 1
D: alsa-util.c: avail_min : 31886
D: alsa-util.c: period_event : 0
D: alsa-util.c: start_threshold : -1
D: alsa-util.c: stop_threshold : 1073741824
D: alsa-util.c: silence_threshold: 0
D: alsa-util.c: silence_size : 0
D: alsa-util.c: boundary : 1073741824
D: alsa-util.c: appl_ptr : 0
D: alsa-util.c: hw_ptr : 0
D: alsa-sink.c: Thread starting up
D: core-util.c: SCHED_RR|SCHED_RESET_ON_FORK worked.
I: core-util.c: Successfully enabled SCHED_RR scheduling for thread, with priority 5.
I: alsa-sink.c: Starting playback.
D: alsa-sink.c: Cutting sleep time for the initial iterations by half.
D: alsa-sink.c: Cutting sleep time for the initial iterations by half.
D: alsa-sink.c: Cutting sleep time for the initial iterations by half.
I: module.c: Loaded "module-alsa-sink" (index: #0; argument: "device=hw:0").
I: module.c: Loaded "module-native-protocol-unix" (index: #1; argument: "auth-anonymous=1").
I: module.c: Loaded "module-always-sink" (index: #2; argument: "").
D: dbus-util.c: Successfully connected to D-Bus system bus ec9628d92c466a4721584eb100000004 as :1.5
W: main.c: Failed to acquire org.pulseaudio.Server: org.freedesktop.DBus.Error.AccessDenied: Connection ":1.5" is not allowed to own the service "org.pulseaudio.Server" due to security policies in the configuration file
I: main.c: Daemon startup complete.
I: client.c: Created 0 "Native client (UNIX socket client)"
I: protocol-native.c: Client authenticated anonymously.
D: protocol-native.c: Protocol version: remote 16, local 16
D: protocol-native.c: SHM possible: no
D: protocol-native.c: Negotiated SHM: no
D: memblockq.c: memblockq requested: maxlength=33554432, tlength=0, base=4, prebuf=0, minreq=1 maxrewind=0
D: memblockq.c: memblockq sanitized: maxlength=33554432, tlength=33554432, base=4, prebuf=0, minreq=4 maxrewind=0
I: sink-input.c: Created input 0 "Playback Stream" on alsa_output.hw_0 with sample spec s16le 2ch 44100Hz and channel map front-left,front-right
I: sink-input.c: media.name = "Playback Stream"
I: sink-input.c: application.name = "gst-launch-0.10"
I: sink-input.c: native-protocol.peer = "UNIX socket client"
I: sink-input.c: native-protocol.version = "16"
I: sink-input.c: application.process.id = "740"
I: sink-input.c: application.process.user = "root"
I: sink-input.c: application.process.host = "omap3evm"
I: sink-input.c: application.process.binary = "gst-launch-0.10"
I: sink-input.c: application.language = "C"
I: sink-input.c: application.process.machine_id = "89908ad0f00641e5ec7d87d200000002"
I: protocol-native.c: Requested tlength=4997.73 ms, minreq=24.99 ms
D: protocol-native.c: Traditional mode enabled, modifying sink usec only for compat with minreq.
D: memblockq.c: memblockq requested: maxlength=1763200, tlength=881600, base=4, prebuf=877192, minreq=4408 maxrewind=0
D: memblockq.c: memblockq sanitized: maxlength=1763200, tlength=881600, base=4, prebuf=877192, minreq=4408 maxrewind=0
I: protocol-native.c: Final latency 5740.77 ms = 4947.76 ms + 2*24.99 ms + 743.04 ms
D: alsa-sink.c: Latency set to 743.04ms
D: alsa-sink.c: hwbuf_unused=4
D: alsa-sink.c: setting avail_min=31887
D: alsa-sink.c: Requesting rewind due to latency change.
D: alsa-sink.c: Requested to rewind 131072 bytes.
D: alsa-sink.c: Limited to 130528 bytes.
D: alsa-sink.c: before: 32632
D: alsa-sink.c: after: 32632
D: alsa-sink.c: Rewound 130528 bytes.
D: sink.c: Processing rewind...
D: sink-input.c: Have to rewind 130528 bytes on render memblockq.
D: source.c: Processing rewind...
D: protocol-native.c: Requesting rewind due to end of underrun.
D: alsa-sink.c: Requested to rewind 131072 bytes.
D: alsa-sink.c: Limited to 100384 bytes.
D: alsa-sink.c: before: 25096
D: alsa-sink.c: after: 25096
D: alsa-sink.c: Rewound 100384 bytes.
D: sink.c: Processing rewind...
D: sink-input.c: Have to rewind 100384 bytes on render memblockq.
D: source.c: Processing rewind...
I: client.c: Created 1 "Native client (UNIX socket client)"
I: protocol-native.c: Client authenticated anonymously.
D: protocol-native.c: Protocol version: remote 16, local 16
D: protocol-native.c: SHM possible: no
D: protocol-native.c: Negotiated SHM: no
I: resampler.c: Using resampler 'speex-float-3'
I: resampler.c: Using float32le as working format.
I: resampler.c: Choosing speex quality setting 3.
D: memblockq.c: memblockq requested: maxlength=33554432, tlength=0, base=4, prebuf=0, minreq=1 maxrewind=0
D: memblockq.c: memblockq sanitized: maxlength=33554432, tlength=33554432, base=4, prebuf=0, minreq=4 maxrewind=0
I: sink-input.c: Created input 1 "Playback Stream" on alsa_output.hw_0 with sample spec s16le 2ch 8000Hz and channel map front-left,front-right
I: sink-input.c: media.name = "Playback Stream"
I: sink-input.c: application.name = "gst-launch-0.10"
I: sink-input.c: native-protocol.peer = "UNIX socket client"
I: sink-input.c: native-protocol.version = "16"
I: sink-input.c: application.process.id = "745"
I: sink-input.c: application.process.user = "root"
I: sink-input.c: application.process.host = "omap3evm"
I: sink-input.c: application.process.binary = "gst-launch-0.10"
I: sink-input.c: application.language = "C"
I: sink-input.c: application.process.machine_id = "89908ad0f00641e5ec7d87d200000002"
I: protocol-native.c: Requested tlength=5000.00 ms, minreq=25.00 ms
D: protocol-native.c: Traditional mode enabled, modifying sink usec only for compat with minreq.
D: memblockq.c: memblockq requested: maxlength=320000, tlength=160000, base=4, prebuf=159200, minreq=800 maxrewind=0
D: memblockq.c: memblockq sanitized: maxlength=320000, tlength=160000, base=4, prebuf=159200, minreq=800 maxrewind=0
I: protocol-native.c: Final latency 5743.04 ms = 4950.00 ms + 2*25.00 ms + 743.04 ms
D: alsa-sink.c: Latency set to 743.04ms
D: alsa-sink.c: hwbuf_unused=4
D: alsa-sink.c: setting avail_min=31887
D: protocol-native.c: Requesting rewind due to end of underrun.
D: alsa-sink.c: Requested to rewind 131072 bytes.
D: alsa-sink.c: Limited to 69740 bytes.
D: alsa-sink.c: before: 17435
D: alsa-sink.c: after: 17435
D: alsa-sink.c: Rewound 69740 bytes.
D: sink.c: Processing rewind...
D: sink-input.c: Have to rewind 69740 bytes on render memblockq.
D: sink-input.c: Have to rewind 69740 bytes on render memblockq.
D: source.c: Processing rewind...
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