On Thu, Jul 26, 2018 at 11:03:08AM -0500, Jason L Tibbitts III wrote: > >>>>> "FW" == Florian Weimer <fwei...@redhat.com> writes: > > FW> I would like to request a change of the Packaging Guidelines, > FW> advising packagers not to interpose malloc. > > How strong of a restriction are you looking for? This sort of feels > like something which would at the strongest be a "SHOULD NOT" but maybe > you're looking for an absolute ban. > > Some maintainers may find it difficult to comply with an absolute ban if > the relevant software doesn't make it easy to change the allocator. And > some upstreams may have strong preferences for one allocator over > another (which I imagine would often be linked to performance). Will > assistance be offered to modify affected packages? What about > contacting upstreams?
Yeah it is often linked to a supposed performance improvement. QEMU supports choice of native, jemalloc or tcmalloc and in Fedora we used to use tcmalloc for QEMU for a while. Then we checked performance again and found that the delta to glibc's native malloc had essentially gone, so we've stopped using tcmalloc. IOW, even if it was done for performance reasons originally, we should not assume that is still valid today as glibc has improved its impl. Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :| _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/message/OECHJAPAUO6UHA5F2MT5G7AE27KLWUJ6/
