* Ankur Sinha: > -D_GLIBCXX_ASSERTIONS was added to the default build flags in F28[1]. > For one of my packages, upstream reports that this results in a 25% slow > down[2], which is quite a lot. > > Has anyone else noticed such performance deterioration as a result of this? We have seen cases where GCC cannot eliminate the bounds check in a tight loop because the array index has the wrong type. This is arguably a bug in the source code; fixing the type also addresses the performance regression. Apart from that, I don't know of any performance regressions. We would have to look at profiles and disassembly to see what's going on in the case of arbor-sim. Thanks, Florian _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
