https://fedoraproject.org/wiki/Changes/PythonNoSemanticInterpositionSpeedup Simplified version of another change proposal|This change was originally proposed for [[Releases/32|Fedora 32]] as [[Changes/PythonStaticSpeedup]], however based on [https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.o... community feedback], it has been significantly reduced. == Summary == We add the <code>-fno-semantic-interposition</code> compiler/linker flag when building Python interpreters, as it provides significant performance improvement, up to 27% depending on the workload. Users will no longer be able to use LD_PRELOAD to override a symbol from libpython, which we consider a good trade off for the speedup.