On Mon, Mar 20, 2017 at 5:33 PM, Michael Haggerty <mhagger@xxxxxxxxxxxx> wrote: > I've completed a draft of an epic 48-patch series implementing all of > the above points on my GitHub fork [1] as branch > `wip/mmap-packed-refs`. It dramatically speeds up performance and > reduces memory usage for some tasks in repositories with very many > packed references. Just curious, what sort of performance numbers on mainly what sort of operations? I'd expect the fixed cost of e.g. `git log -1 >/dev/null` to go down, which can take as long as a second on some repos with a huge amount of refs, but anything else?