From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alexander Miseler <alexander@miseler.de>
Subject: Re: Summer of Code project ideas due this Friday
Date: Thu, 10 Mar 2011 22:43:39 +0100
Message-ID: <4D79460B.1000408@miseler.de>
References: <AANLkTinpVKBjcqxaCGH0vp82kpKsO2uCBPdMoMKco6Ex@mail.gmail.com> <20110303185918.GA18503@sigill.intra.peff.net> <AANLkTinXZDq5FJxMmxUuWpCGgMYb3HH774eLJCojmnOz@mail.gmail.com> <20110303203323.GA21102@sigill.intra.peff.net> <20110309174956.GA22683@sigill.intra.peff.net> <AANLkTinpAOE06YX-m=ptQM_y-QMGpVmjewDxWopkXJkQ@mail.gmail.com> <20110309215841.GC4400@sigill.intra.peff.net> <20110310001017.GA24169@elie> <20110310163011.GA17137@sigill.intra.peff.net> <AANLkTinv-CQ4TKQu8T8o6K5aJ3ivdrScPN0shF=ma9Oz@mail.gmail.com>
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Cc: Jeff King <peff@peff.net>, Jonathan Nieder <jrnieder@gmail.com>,
	Ramkumar Ramachandra <artagnon@gmail.com>,
	Jens Lehmann <Jens.Lehmann@web.de>,
	Christian Couder <chriscool@tuxfamily.org>,
	Thomas Rast <trast@student.ethz.ch>, git <git@vger.kernel.org>
To: Shawn Pearce <spearce@spearce.org>
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On 10.03.2011 18:31, Shawn Pearce wrote:
> On Thu, Mar 10, 2011 at 08:30, Jeff King <peff@peff.net> wrote:
>>
>>> 7. packfilev4.
>>
>> I suspect that is too complex for a SoC project. But you never know.
> 
> It is. Nico is also probably working on it.
> 
> My big concern with pack v4 right now is the on-disk format of
> commits/trees is different from the current wire protocol. If a pack
> v2 only client connected to a server using pack v4, the server would
> have to spend a lot of time to inflate/deflate about 60% of the
> objects in the repository (commits and trees). That is a lot of CPU
> time. So even if a SoC-er finished the work, it probably wouldn't be
> merged because of this penalty.

I'm very interested in this. Can anyone please point me towards further information on the packfile format and proposed/in-progress changes?