https://bugs.freedesktop.org/show_bug.cgi?id=71078
--- Comment #4 from TOM_Harrison <l12436 at yahoo.com.tw> ---
this is snapshot with sysprof
[/usr/bin/pulseaudio] 0.00%
82.13%
In file /lib/x86_64-linux-gnu/libc-2.17.so 40.41%
40.42%
- - kernel - - 0.00%
0.00%
retint_careful 0.00%
0.00%
_raw_spin_unlock_irq 0.00%
0.00%
No map [/usr/bin/pulseaudio] 0.00%
33.59%
In file [heap] 0.00%
23.29%
ioctl 0.34%
22.48%
- - kernel - - 0.00%
22.14%
system_call_fastpath 0.00%
22.14%
sys_ioctl 0.16%
22.07%
do_vfs_ioctl 0.14%
21.12%
snd_pcm_playback_ioctl 0.02%
20.97%
snd_pcm_playback_ioctl1 0.07%
20.91%
snd_pcm_common_ioctl1 0.08%
20.82%
_raw_read_unlock_irq 20.64%
20.64%
snd_pcm_hwsync 0.08%
0.09%
_raw_read_lock_irq 0.01%
0.01%
snd_pcm_hwsync 0.02%
0.02%
snd_pcm_common_ioctl1 0.03%
0.03%
snd_pcm_playback_ioctl1 0.01%
0.01%
fget_light 0.47%
0.51%
fput 0.19%
0.19%
snd_pcm_playback_ioctl 0.04%
0.04%
__rcu_read_lock 0.02%
0.02%
cap_file_ioctl 0.02%
0.02%
security_file_ioctl 0.00%
0.01%
__rcu_read_unlock 0.01%
0.01%
do_vfs_ioctl 0.03%
0.03%
fput 0.02%
0.02%
fget_light 0.01%
0.01%
In file /usr/lib/x86_64-linux-gnu/libasound.so.2.0.0 0.43%
0.44%
ppoll 0.02%
0.24%
snd_pcm_state 0.04%
0.04%
pa_rtpoll_run 0.02%
0.02%
snd_pcm_hwsync 0.01%
0.01%
pa_asyncmsgq_read_after_poll 0.01%
0.01%
pa_asyncmsgq_write_before_poll 0.01%
0.01%
In file /lib/x86_64-linux-gnu/libc-2.17.so 0.01%
0.01%
pa_fdsem_after_poll 0.01%
0.01%
pa_asyncq_write_after_poll 0.01%
0.01%
gettimeofday 0.00%
0.00%
pa_asyncmsgq_write_after_poll 0.00%
0.00%
snd_pcm_avail_update 0.00%
0.00%
pa_asyncq_write_before_poll 0.00%
0.00%
pa_asyncq_read_before_poll 0.00%
0.00%
In file /lib/x86_64-linux-gnu/libc-2.17.so 8.53%
8.53%
In file /usr/lib/x86_64-linux-gnu/libasound.so.2.0.0 0.31%
0.31%
pa_once_begin 0.29%
0.29%
pa_memblock_release 0.24%
0.24%
pa_memblock_acquire 0.20%
0.20%
pa_frame_aligned 0.14%
0.14%
snd_pcm_mmap_begin 0.12%
0.12%
pa_object_ref 0.12%
0.12%
pa_silence_memory 0.11%
0.11%
pa_silence_memchunk 0.07%
0.07%
clock_gettime 0.00%
0.03%
pa_run_once 0.03%
0.03%
snd_pcm_state 0.02%
0.02%
pa_sink_render_into_full 0.02%
0.02%
pa_frame_size 0.01%
0.01%
pa_fdsem_before_poll 0.01%
0.01%
pa_sample_spec_valid 0.01%
0.01%
pa_asyncmsgq_get 0.01%
0.01%
pthread_mutex_unlock 0.00%
0.00%
pa_asyncq_read_before_poll 0.00%
0.00%
pa_ratelimit_test 0.00%
0.00%
In file /usr/lib/libpulsecore-4.0.so 0.00%
0.00%
pa_object_check_type 0.00%
0.00%
pa_asyncq_pop 0.00%
0.00%
In file [heap] 0.00%
1.95%
In file /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-4.0.so 0.98%
0.98%
In file /usr/lib/pulse-4.0/modules/libalsa-util.so 0.60%
0.63%
In file /usr/lib/x86_64-linux-gnu/libasound.so.2.0.0 0.62%
0.62%
pa_memblock_unref 0.60%
0.60%
In file /usr/lib/libpulsecore-4.0.so 0.17%
0.54%
ioctl 0.00%
0.37%
pa_memblock_new_fixed 0.35%
0.35%
snd_pcm_mmap_commit 0.15%
0.15%
pa_bytes_to_usec 0.14%
0.14%
pa_sink_render_into_full 0.13%
0.13%
pa_memblock_unref_fixed 0.12%
0.12%
_dl_update_slotinfo 0.11%
0.11%
pa_object_unref 0.11%
0.11%
pa_alsa_safe_avail 0.10%
0.10%
pa_flist_push 0.10%
0.10%
update_get_addr 0.10%
0.10%
pa_memblock_get_length 0.09%
0.09%
pa_once_begin 0.08%
0.08%
pa_frame_size 0.08%
0.08%
snd_pcm_format_physical_width 0.08%
0.08%
pa_flist_pop 0.08%
0.08%
pa_alsa_safe_mmap_begin 0.06%
0.06%
pa_hashmap_iterate 0.06%
0.06%
pa_sample_spec_valid 0.05%
0.05%
pa_cvolume_channels_equal_to 0.05%
0.05%
pa_thread_mq_get 0.04%
0.04%
snd_pcm_mmap_begin 0.04%
0.04%
pa_sink_render_into 0.04%
0.04%
__tls_get_addr 0.03%
0.03%
pa_bytes_to_usec_round_up 0.03%
0.03%
pa_run_once 0.02%
0.02%
pa_mempool_block_size_max 0.02%
0.02%
pa_bytes_per_second 0.02%
0.02%
pa_object_check_type 0.02%
0.02%
pa_sink_check_type 0.01%
0.01%
pa_smoother_translate 0.01%
0.01%
snd_pcm_poll_descriptors_revents 0.01%
0.01%
ppoll 0.00%
0.01%
pa_sink_get_requested_latency_within_thread 0.01%
0.01%
pa_rtpoll_item_get_pollfd 0.01%
0.01%
pa_rtpoll_run 0.01%
0.01%
pa_static_mutex_get 0.01%
0.01%
snd_pcm_avail 0.00%
0.00%
pa_rtpoll_set_timer_disabled 0.00%
0.00%
pa_sink_process_input_underruns 0.00%
0.00%
pa_alsa_safe_delay 0.00%
0.00%
pa_asyncq_pop 0.00%
0.00%
snd_pcm_status 0.00%
0.00%
pa_msgobject_check_type 0.00%
0.00%
pa_log_ratelimit 0.00%
0.00%
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