From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Shawn O. Pearce" <spearce@spearce.org>
Subject: Re: q: git-fetch a tad slow?
Date: Wed, 30 Jul 2008 21:45:31 -0700
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References: <20080728160138.GA12777@elte.hu> <20080729055014.GE11947@spearce.org> <20080729090802.GA11373@elte.hu> <20080730044855.GA7225@spearce.org> <20080730190657.GC26389@elte.hu>
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Cc: git@vger.kernel.org
To: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar <mingo@elte.hu> wrote:
> alas, fetching still seems to be slow:
> 
>   titan:~/tip> time git-fetch origin
> 
>   real    0m5.112s
>   user    0m0.972s
>   sys     0m3.380s

What version of git are dealing with on the client side?

I only have a MacBook Pro (2.4 GHz Intel Core 2 Duo) and I'm getting
fetch times of ~472 ms over git:// to your -tip.git tree and ~128
ms for strictly local fetch.  If your SSH overhead is ~300 ms this
is only a ~700 ms real time for `git fetch origin`, not 5100 ms.

Is your git-fetch a shell script?  Or a compiled binary?  The port
into C made it go _much_ faster, even though it is still a naive
O(N^2) matching algorithm.  Yea, we still should fix that, but
I think an upgrade to 1.5.4 or later would make the client side
improve consideribly.

-- 
Shawn.