From: Jeff King <peff@peff.net>
Date: Tue, 06 Dec 2011 18:56:36 GMT
Subject: Re: [PATCH] Set hard limit on delta chain depth
Message-ID: <20111206185636.GC9492@sigill.intra.peff.net>
In-Reply-To: <CAJo=hJuy27Uagmubbv=RqAOMx03e6JBgZxObkjFLg9oG2x_UqA@mail.gmail.com>

On Tue, Dec 06, 2011 at 10:12:54AM -0800, Shawn O. Pearce wrote:

> > Normal creators (i.e. C Git) use default depth 50 so we should be safe.
> 
> JGit is also a "normal creator", and it sometimes produces chains
> deeper than 50. Junio identified a 255 deep chain a week or two ago.
> Some people have repacked their repositories very aggressively with
> deeper chains when they are trying to optimize for space and don't
> access historical revisions very often. I doubt anyone has packed
> deeper than 120ish intentionally... but we shouldn't assume that in
> the code.

"git gc --aggressive" will set the depth to 250.

-Peff