From: Ingo Molnar <mingo@elte.hu>
Date: Thu, 31 Jul 2008 21:03:07 GMT
Subject: Re: q: git-fetch a tad slow?
Message-ID: <20080731210307.GF25138@elte.hu>
In-Reply-To: <20080731044531.GB1860@spearce.org>


* Shawn O. Pearce <spearce@spearce.org> wrote:

> 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?

the client side on titan has:

 titan:~> git version
 git version 1.5.2.2

oldish but not outrageously old, right?

 server side has:

 earth4:~> git version
 git version 1.5.6.1.108.g660379

> 
> 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.

ah, it is a shell script indeed! I'll upgrade to latest.

	Ingo