From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 16490 invoked by alias); 4 Oct 2004 20:49:43 -0000 Mailing-List: contact gdb-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sources.redhat.com Received: (qmail 16473 invoked from network); 4 Oct 2004 20:49:43 -0000 Received: from unknown (HELO nevyn.them.org) (66.93.172.17) by sourceware.org with SMTP; 4 Oct 2004 20:49:43 -0000 Received: from drow by nevyn.them.org with local (Exim 4.34 #1 (Debian)) id 1CEZmA-0003j4-KZ; Mon, 04 Oct 2004 16:49:42 -0400 Date: Mon, 04 Oct 2004 20:54:00 -0000 From: Daniel Jacobowitz To: Nick Savoiu Cc: gdb@sources.redhat.com Subject: Re: Debugging a large program Message-ID: <20041004204942.GB8508@nevyn.them.org> Mail-Followup-To: Nick Savoiu , gdb@sources.redhat.com References: <043c01c4aa53$01e419b0$5a02a8c0@rio> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <043c01c4aa53$01e419b0$5a02a8c0@rio> User-Agent: Mutt/1.5.5.1+cvs20040105i X-SW-Source: 2004-10/txt/msg00060.txt.bz2 On Mon, Oct 04, 2004 at 01:44:55PM -0700, Nick Savoiu wrote: > Hi, > > I'm using GDB to debug a rather large program and I'm running into memory > usage problems that slow down debugging considerably. Just invoking GDB on > the executable (without issuing 'run') results in GDB using up 450MB of > memory. > > I think that this is caused by GDB reading in all the symbol info. However, > the code that I'm debugging uses but a small fraction of the code that's > present in the program. Can I somehow tell GDB to only load the symbols it > needs? GDB already reads in only what it needs, and more lazily - however, there's some information about every symbol that's needed. 450MB is pretty remarkable; how big is the application? readelf -S output would be the best way to answer the question. -- Daniel Jacobowitz