stefanhaller added a comment. In D124715#3488447 <https://reviews.llvm.org/D124715#3488447>, @sammccall wrote:
> (How) does this interact with battery vs mains power on laptops? > It seems like there's a common scenario where: > > - the user is on a relatively slow laptop, running off battery > - the codebase is large, and indexing is unlikely to finish within an editing > session > > In this case, it seems like only using efficiency cores is what you'd want, > and that people are likely to be upset if clangd 15 keeps their performance > cores running at all times. I can only speak for myself here: I'm a laptop user myself, and I work on battery the majority of the day; but I still wouldn't trade indexing speed for saving battery. The clangd index is so essential for my work that I always want it to be available as quickly as possible. > Reading the docs > <https://developer.apple.com/library/archive/documentation/Performance/Conceptual/power_efficiency_guidelines_osx/PrioritizeWorkAtTheTaskLevel.html> > it seems like background is the intended QoS for this type of work ("such as > indexing"..."minutes or hours"). How long it takes is only one aspect of it. Other clues from the documentation: Utility: "typically have a progress bar that is visible to the user. Focuses on providing a balance between responsiveness, performance, and energy efficiency." Background: "isn't visible to the user. Focuses on energy efficiency." The way I read it, Background is intended for tasks that don't make a significant difference to the functionality of the software. An example might be face detection in the Photos app; as long as it is not finished, it only affects a small part of the functionality, the rest of the app is perfectly usable. That's not the case for clangd, the software is pretty much not usable without an index. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D124715/new/ https://reviews.llvm.org/D124715 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
