From: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Date: Mon, 20 Mar 2017 18:24:12 GMT
Subject: Re: [PATCH 00/20] Separate `ref_cache` into a separate module
Message-ID: <CACBZZX7Kqo=w-c2LOH9a4xf6WpnhE5tsvNHa1O2-4dvYTKZxEA@mail.gmail.com>
In-Reply-To: <cover.1490026594.git.mhagger@alum.mit.edu>

On Mon, Mar 20, 2017 at 5:33 PM, Michael Haggerty <mhagger@alum.mit.edu> 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?