> From: Ralph Corderoy <ralph@xxxxxxxxxxxxxxx> > Sent: Tue Nov 26 11:07:36 CET 2019 > To: <arch-general@xxxxxxxxxxxxx> > Subject: Fedora Speeds Up Python 3. > > > Hi, > > I thought this might be of interest. > https://fedoraproject.org/wiki/Changes/PythonNoSemanticInterpositionSpeedup > > By building with -fno-semantic-interposition they remove the PLT that > provides a level of indirection when calling a libpython function. > libpython often calls itself and the PLT adds L1-cache pressure plus > prevents inlining. Gives gains of 25% on some workloads. > > -- > Cheers, Ralph. Does it work alongside "-fno-plt" flag that Arch uses? Yours sincerely G. K.
