On Sun, Jan 12, 2025 at 05:21:18PM +0100, Vitaly Zaitsev via devel wrote: > On 12/01/2025 13:02, Christoph Erhardt wrote: > > 1. Not all packages but only those whose maintainers explicitly opt in. > > Yes, at the first stage. But over time the number of packages can increase > significantly. I think any massive use of this scheme is unlikely. Note that we'd want to this only for packages where the optimized code yields noticeable benefits. There just aren't that many packages which do significant number crunching _and_ don't already use some kind of runtime cpu detection. > > 2. The duplication will affect only the executable ELFs - i.e. the > > contents of `/usr/bin` - shipped by these packages. There will be no > > duplication of shared libraries, data files or anything else. > > Shared libraries used by affected packages should also be rebuilt with these > optimizations. For example, Firefox has most of its logic in *.so files. > > > One effect this *will* have is a slightly increased latency for > > launching an affected program. > > How much? Benchmarks indicate 100–1000 μs. Zbyszek -- _______________________________________________ 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 Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
