On Sat, 2023-07-01 at 10:31 -0700, Noah Misch wrote: > As of commit b8c3f6d, InstallCheck-C got daticulocale=en-US-u-va- > posix. Check > got daticulocale=NULL.
With the same test setup, that locale takes about 8.6 seconds (opening it 10M times), about 2.5X slower than "en-US" and about 7X slower than "und". I think that explains it. The locale "en-US-u-va-posix" normally happens when passing a locale beginning with "C" to ICU. After 2535c74b1a we don't get ICU locales from the environment anywhere, so that should be rare (and probably indicates a user mistake). I don't think this is a practical problem any more. Regards, Jeff Davis