My application links to static Ipp libraries ( merged.lib + emerged.lib + IppStaticInitBest()).When I upgraded libraryfrom V4.0 to V4.1 I noticed a huge performance degradation.Ippmpeg4 codecruns about 2x slower.I didn't change anything but simplychanged ipp*.lib and *h files to newer versions.Everything is ok whenI revert to the previous version.
What could be a reason ?
Processortype detected correctly as "Pentium4HT2 2800MHz". mpeg codec is put in separate static library, butIppStaticInitBest() is called from my main exe.
Thanks in advance,