On Tue, Feb 16, 2021 at 09:54:24AM -0500, Jeff King wrote: > This is all on Linux, of course. Perhaps other systems with slower > syscalls may be more impacted. I timed it on macOS, which (as you know) I don't use for daily development, but it's a useful testbed from time to time. On your branch, 'git check-attr -a' took 193.4ms with O_NOFOLLOW, and 245.3ms without. After touching every .gitattributes file, those numbers shot up to 340.9ms and 346.6ms, respectively. (All numbers on linux.git, of course). There isn't an apples-to-apples comparison between my numbers and yours (since my laptop is much slower than yours), but the relative numbers are quite clear that only doing a single syscall is worth it in the non-pathological case. Thanks, Taylor
