On Tue, Feb 14, 2017 at 12:31:46PM +0100, Johannes Schindelin wrote: > On Windows, calls to memihash() and maintaining the istate.name_hash and > istate.dir_hash HashMaps take significant time on very large > repositories. This series of changes reduces the overall time taken for > various operations by reducing the number calls to memihash(), moving > some of them into multi-threaded code, and etc. > > Note: one commenter in https://github.com/git-for-windows/git/pull/964 > pointed out that memihash() only handles ASCII correctly. That is true. > And fixing this is outside the purview of this patch series.
Out of curiosity, do you have numbers? Bonus points if the speedup can be shown via a t/perf script. We have a read-cache perf-test already, but I suspect you'd want something more like "git status" or "ls-files -o" that calls into read_directory(). -Peff
