From mboxrd@z Thu Jan  1 00:00:00 1970
From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Subject: Re: Performance issue of 'git branch'
Date: Sun, 26 Jul 2009 01:23:58 +0200 (CEST)
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Cc: Mike Hommey <mh@glandium.org>, Timo Hirvonen <tihirvon@gmail.com>,
	git@vger.kernel.org, "Carlos R. Mafra" <crmafra2@gmail.com>,
	Junio C Hamano <gitster@pobox.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
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Hi,

On Sat, 25 Jul 2009, Linus Torvalds wrote:

> On Sat, 25 Jul 2009, Linus Torvalds wrote:
> >
> > The fact that apparently sometimes it's less bloated than other times 
> > doesn't really change anything fundamental, does it?
> 
> Btw, does anybody know how/why libdl seems to get linked in too?
> 
> We're not doing -ldl, and I'm not seeing any need for it, but it's 
> definitely there on fedora, at least.
> 
> It seems to come from libcrypto. I can get rid of it with NO_OPENSSL, and 
> that cuts down on the number of system calls in my startup by 16 (getting 
> rid of both libcrypto and libdl). I wonder if there is some way to get the 
> optimized openssl sha1 routines _without_ that silly ldl thing.

OpenSSL allows for so-called engines implementing certain algorithms.  
These engines are dynamic libraries, loaded via dlopen().

Ciao,
Dscho