From: Jeff King <peff@peff.net>
To: Shawn Pearce <spearce@spearce.org>
Cc: Nguyen Thai Ngoc Duy <pclouds@gmail.com>,
Michael Haggerty <mhagger@alum.mit.edu>,
kusmabite@gmail.com, git@vger.kernel.org,
Junio C Hamano <gitster@pobox.com>
Subject: Re: [PATCH] Set hard limit on delta chain depth
Date: Tue, 6 Dec 2011 13:56:36 -0500 [thread overview]
Message-ID: <20111206185636.GC9492@sigill.intra.peff.net> (raw)
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
next prev parent reply other threads:[~2011-12-06 18:56 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-05 7:04 [PATCH] Set hard limit on delta chain depth Nguyễn Thái Ngọc Duy
2011-12-06 12:17 ` Erik Faye-Lund
2011-12-06 12:32 ` Nguyen Thai Ngoc Duy
2011-12-06 12:41 ` Erik Faye-Lund
2011-12-06 12:48 ` Nguyen Thai Ngoc Duy
2011-12-06 14:54 ` Michael Haggerty
2011-12-06 15:30 ` Nguyen Thai Ngoc Duy
2011-12-06 18:12 ` Shawn Pearce
2011-12-06 18:56 ` Jeff King [this message]
2011-12-06 15:06 ` Junio C Hamano
2011-12-06 15:45 ` Nguyen Thai Ngoc Duy
2011-12-10 0:02 ` Junio C Hamano
2011-12-07 17:50 ` [PATCH] index-pack: eliminate unlimited recursion in get_delta_base() Nguyễn Thái Ngọc Duy
2011-12-08 3:02 ` Shawn Pearce
2011-12-08 11:06 ` Nguyen Thai Ngoc Duy
2011-12-08 13:40 ` [PATCH 1/2] index_pack: indent find_unresolved_detals one level pclouds
2011-12-09 21:27 ` Junio C Hamano
[not found] ` <1323351638-4790-1-git-send-email-y>
2011-12-08 13:40 ` [PATCH 2/2] index-pack: a naive attempt to flatten find_unresolved_deltas pclouds
2011-12-08 16:42 ` Shawn Pearce
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