From: Johannes Schindelin <johannes.schindelin@gmx.de>
Date: Sat, 25 Jul 2009 23:23:58 GMT
Subject: Re: Performance issue of 'git branch'
Message-ID: <alpine.DEB.1.00.0907260123090.8306@pacific.mpi-cbg.de>
In-Reply-To: <alpine.LFD.2.01.0907251406390.3960@localhost.localdomain>

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