From: Markus Trippelsdorf <markus@trippelsdorf.de>
Date: Thu, 04 Oct 2012 19:26:21 GMT
Subject: Re: git pull takes ~8 seconds on up-to-date Linux git tree
Message-ID: <20121004192621.GA244@x4>
In-Reply-To: <20121004184314.GA15389@sigill.intra.peff.net>

On 2012.10.04 at 14:43 -0400, Jeff King wrote:
> On Thu, Oct 04, 2012 at 04:14:54PM +0200, Markus Trippelsdorf wrote:
> 
> > with current trunk I get the following on an up-to-date Linux tree:
> > 
> > markus@x4 linux % time git pull
> > Already up-to-date.
> > git pull  7.84s user 0.26s system 92% cpu 8.743 total
> > 
> > git version 1.7.12 is much quicker:
> > 
> > markus@x4 linux % time git pull
> > Already up-to-date.
> > git pull  0.10s user 0.02s system 16% cpu 0.740 total
> 
> Yikes. I can easily reproduce here. Bisecting between master and
> v1.7.12 gives a curious result: the slowdown first occurs with the merge
> commit 34f5130 (Merge branch 'jc/merge-bases', 2012-09-11). But neither
> of its parents is slow. I don't see anything obviously suspect in the
> merge, though.

Actually commit f37d3c75 is responsible for this. When I revert it, the
problem goes away.

-- 
Markus