I am using the IMSDK to encode HD/UHD video streams using h264 codec at very high bitrates (100-200 Mbps or so). My platform is a Haswell i7 4771 running Ubuntu 12.04 (with the right kernel 3.8.0-23-generic). This works perfectly well using the 2013R3 release.
I am currently evaluating the last release of the IMSDK. Using exactly the same software, on the same platform, and using same input streams, I notice that the 2014 release is about 20% slower than the older release (2013R3). Encoding speed is critical for my application, and I am reluctant to migrate our encoding servers to the 2014R1 knowing the fact that it runs slower.
Do people at Intel have any clue about this issue ? Have I misconfigured something ?