From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 17196 invoked by alias); 26 Apr 2006 14:55:29 -0000 Received: (qmail 17188 invoked by uid 22791); 26 Apr 2006 14:55:29 -0000 X-Spam-Check-By: sourceware.org Received: from main.gmane.org (HELO ciao.gmane.org) (80.91.229.2) by sourceware.org (qpsmtpd/0.31) with ESMTP; Wed, 26 Apr 2006 14:55:25 +0000 Received: from list by ciao.gmane.org with local (Exim 4.43) id 1FYlPa-0004qO-Q7 for gdb@sources.redhat.com; Wed, 26 Apr 2006 16:54:43 +0200 Received: from zigzag.lvk.cs.msu.su ([158.250.17.23]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 26 Apr 2006 16:54:38 +0200 Received: from ghost by zigzag.lvk.cs.msu.su with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 26 Apr 2006 16:54:38 +0200 To: gdb@sources.redhat.com From: Vladimir Prus Subject: Re: MI: performance of getting stack arguments Date: Wed, 26 Apr 2006 18:02:00 -0000 Message-ID: References: <20060418161654.GA15524@nevyn.them.org> <200604191020.08044.ghost@cs.msu.su> <20060419124032.GA9524@nevyn.them.org> <20060426141002.GB20166@nevyn.them.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7Bit User-Agent: KNode/0.8.2 X-IsSubscribed: yes Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org X-SW-Source: 2006-04/txt/msg00320.txt.bz2 Daniel Jacobowitz wrote: > On Wed, Apr 26, 2006 at 06:06:26PM +0400, Vladimir Prus wrote: >> Ok, I'll try to do this. First on -stack-list-arguments, since it's >> pretty slow to. But, maybe I should be using callgrind (part of valgrind >> suite) for profiling? > > I've had a lot of trouble getting the valgrind tools to play nice with > GDB; they want to debug the children too and get confused by ptrace. > But it looks like there've been some changes and now the default is not > to do that, so maybe it'll work better. Ok. I'll try. Here's the results I get for multiple -stack-list-frames commands: % cumulative self self total time seconds seconds calls Ts/call Ts/call name 24.18 2.50 2.50 find_pc_sect_psymbol 18.28 4.39 1.89 lookup_minimal_symbol_by_pc_section 8.03 5.22 0.83 find_pc_sect_psymtab 6.48 5.89 0.67 find_pc_sect_section 4.06 6.31 0.42 dwarf2_frame_find_fde 3.09 6.63 0.32 find_pc_sect_line 2.03 6.84 0.21 mem_file_write 1.84 7.03 0.19 printchar I'm not sure how to interpret this data, though. - Volodya