On Mon, Jan 30, 2012 at 06:25, Michael Cook <mcook@xxxxxxx> wrote: > How often does git actually calculate a file's SHA? > > `strace git status` shows that git stat'ed many files, but opened only a > few. So I assume git has some heuristicsbased on the stat infofor when to > recalculate the SHAs. > > Any pointers to how I could have figured this out myself from looking at the > source code would be appreciated. Google wasn't helpful. During `git status` Git performs an lstat() of every file in the working tree. If the file matches stat structure data with the cache held in .git/index, Git assumes the file is unmodified. Things Git are looking for is usually size, mtime, inode number, creation time, etc. -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html