<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <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#c56">Comment # 56</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 <a class="email" href="mailto:alessandroferri_015@fastwebnet.it" title="Alessandro Ferri <alessandroferri_015@fastwebnet.it>"> Alessandro Ferri</a> <pre>Hi Reymond, I have attached two reports. The first run with the Kernel 3.12.25+ and the second with the Kernel 3.12.29+. I can summarize to you that the behavior is the same with both kernel without exception: up to a buffer_size of 1024, there are no underrun, with lower buffer_size start underrun more and more frequent. I want to specify that the song played has the following codecs: Desperado.wav codec=uncompressed-integer Bitrate(kb/s)=512 (In reply to Alessandro Ferri from <a href="show_bug.cgi?id=84585#c55">comment #55</a>) > Created <a href="attachment.cgi?id=107897" name="attach_107897" title="Report of aplay -v -D hw:0,0 --buffer-size=4096 stereo.wav with Kernel 3.12.29+">attachment 107897</a> <a href="attachment.cgi?id=107897&action=edit" title="Report of aplay -v -D hw:0,0 --buffer-size=4096 stereo.wav with Kernel 3.12.29+">[details]</a> > Report of aplay -v -D hw:0,0 --buffer-size=4096 stereo.wav with Kernel > 3.12.29+ > > outcome prompted with: > aplay -v -D hw:0,0 --buffer-size=4096 Desperado.wav > for buffer size 4096, 2048, 1024, 512, 256, 128, 64,... > > with the kernel:Kernel 3.12.29</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>