I looked a bit at finding a way to monitor performance during rebuild, but I’m no sys dev.
Anyway, I’ve noticed in the CLI a lot of “locale” related stuff scrolling by, and was wondering if for sites that have only a single locale with the user locale preference not enabled, it might improve the rebuild process if unused locales could be in a cache and not be a part of a rebuild each time.
An issue might be checking the source locale files for changes.
And it could be that although I see a lot of locale stuff happening during a rebuild it only adds up to a relatively insignificant amount of resource use compared to everything else that happens.
If anyone knows a way that I could monitor how much the unused locales impact rebuild, or knows it isn’t worth exploring, please tell.