From: Derrick Stolee <stolee@gmail.com>
Date: Tue, 04 Dec 2018 14:17:20 GMT
Subject: Re: How de-duplicate similar repositories with alternates
Message-ID: <c8a2b2c7-e8f1-3da2-cb39-5f7bd22d1818@gmail.com>
In-Reply-To: <87sgzdv2gz.fsf@evledraar.gmail.com>

On 12/4/2018 8:35 AM, Ævar Arnfjörð Bjarmason wrote:
>   The leftover space
> spent is the commit-grah (not de-duped like objects are), and...

The commit-graph could be shared, as the commits in each enlistment can 
be parsed from local with GENERATION_NUMBER_INFINITY, giving us similar 
speedups.

The issue is: who updates the file? As the commit-graph gets behind, 
performance will degrade. But it seems like you'd need similar 
maintenance on the alternate object store, anyway.

Thanks,
-Stolee