On Wed, Feb 27, 2013 at 1:46 PM, "René J.V. Bertin" <[email protected]> wrote: > On Feb 27, 2013, at 17:37, Claudio Freire wrote: > >>> Detailed benchmark results: (32 bit, MMX/SSE code, -fno-tree-vectorize) >>> samples user t kernel t real t >>> CPU % >>> Video decode : 85166 27.0846s 2.48361s 13.5333s >>> 218.484% >> >> >> Wait... 200%... what's your hardware like? >> >> If by any chance you have Hyper Threading enabled (which is quite >> likely), then I bet that's what the penalty is coming from (there's > > Ah, ok. I have a dual core, hyper-threaded i7 . Do you think there's an > interest other than academic to deactivate hyper threading?
I think it's just academic. It would be one mystery less. Perhaps it would be easier trying to disable threading in ffmpeg and re-running the benchmark. _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
