[FFmpeg-devel] [PATCH] Yield on AVERROR(EAGAIN).

[Michael Niedermayer]

On Thu, Mar 04, 2010 at 09:22:44PM -0300, Ramiro Polla wrote:
> Hi,
> 
> Currently FFmpeg eats 100% cpu on devices that return EAGAIN. Attached
> patch makes FFmpeg yield when it gets EAGAIN. In Windows it gets down
> to normal cpu levels, but on Linux this didn't work as I expected, it
> still eats 100% cpu. 

> Any ideas?

try it with 2 processes of equal priority
without yield they should be 50% each if one yields the other should get
100% in theory


> 
> Ramiro Polla

>  ffmpeg.c                 |    1 +
>  libavformat/os_support.h |   16 ++++++++++++++++
>  libavformat/utils.c      |    5 ++++-
>  3 files changed, 21 insertions(+), 1 deletion(-)
> 500496eb221c93827504d8eb615c143c82f532a1  ff_yield.diff

ok

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Why not whip the teacher when the pupil misbehaves? -- Diogenes of Sinope
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