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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Issue of CPU usage with HiFiBerry driver snd_soc_hifiberry_amp with Debian Wheezy kernel 3.12.28"
href="https://bugs.freedesktop.org/show_bug.cgi?id=84585#c98">Comment # 98</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Issue of CPU usage with HiFiBerry driver snd_soc_hifiberry_amp with Debian Wheezy kernel 3.12.28"
href="https://bugs.freedesktop.org/show_bug.cgi?id=84585">bug 84585</a>
from <span class="vcard"><a class="email" href="mailto:alessandroferri_015@fastwebnet.it" title="Alessandro Ferri <alessandroferri_015@fastwebnet.it>"> <span class="fn">Alessandro Ferri</span></a>
</span></b>
<pre>(In reply to Raymond from <a href="show_bug.cgi?id=84585#c96">comment #96</a>)
<span class="quote">> <a href="https://wiki.debian.org/PulseAudio">https://wiki.debian.org/PulseAudio</a>
>
> you need to remove the leading semicolon if you want to change any parameter</span >
Hi Raymond
these are the results obtained by setting the parameter, without the leading
semicolon on /etc/pulse/daemon.conf:
default-fragment-size-msec = 80
As can be seen there is an improvement albeit minimal, but not sufficient. In
Kernel 3.12.25+ pulseaudio used at most 13% of the CPU.
pi@raspberrypi ~ $ top
top - 09:42:23 up 2 min, 2 users, load average: 1.36, 0.63, 0.24
Tasks: 92 total, 1 running, 91 sleeping, 0 stopped, 0 zombie
%Cpu(s): 39.6 us, 26.8 sy, 0.0 ni, 29.4 id, 0.0 wa, 0.0 hi, 4.2 si, 0.0 st
KiB Mem: 447856 total, 137048 used, 310808 free, 14876 buffers
KiB Swap: 102396 total, 0 used, 102396 free, 67500 cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2337 pulse 9 -11 87984 5132 3532 S 49.8 1.1 0:26.73 pulseaudio
2416 pi 20 0 115m 3928 2532 S 15.9 0.9 0:08.62 shairport
2524 root 20 0 22264 10m 4660 S 1.3 2.5 0:03.13 Xorg
2739 pi 20 0 4672 1380 1036 R 1.3 0.3 0:01.12 top
2728 pi 20 0 113m 9932 7696 S 0.6 2.2 0:01.52 lxterminal</pre>
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