[pulseaudio-tickets] [Bug 84585] Issue of CPU usage with HiFiBerry driver snd_soc_hifiberry_amp with Debian Wheezy kernel 3.12.28

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84585

--- Comment #45 from Raymond <superquad.vortex2 at gmail.com> ---
although there is bug in the program

1) start threshold is period size, this mean start time is earlier 
2) only need to get the time when printing the result
3) seem missing the last result 4096


the result look like bug in driver
1) if period size is 1024, result should include 1024, 2048, 3072 and 4096
2) the variation of elasped time seem quite large from 110 to 9158 us

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