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

[Måns Rullgård]

Michael Niedermayer <michaelni at gmx.at> writes:

> 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

Not OK.

-- 
M?ns Rullg?rd
mans at mansr.com