[FFmpeg-devel] Jpeg2000 decoders comparison

[Reimar Döffinger]

On Thu, Jul 04, 2013 at 10:34:06PM +0200, Nicolas BERTRAND wrote:
> The results and comments are detailed here: http://www.isf.cc/wiki/doku.php/dcinema:notes_techs:benchmarks:comp_perf

You should try running with different affinity masks.
This looks a lot like trouble starts once both sockets are being used.
However locking etc. isn't really a working explanation for this,
since the same multithreading, synchronization, locking etc.
code is used in both cases.
Also considering those are 6 core processors you really should
run these tests with 6 and 12 threads, too.
And using ms/frame might be slightly more useful than fps, it's
e.g. easier to correlate with profiling information.