From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 6206 invoked by alias); 3 May 2004 02:49:46 -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 6198 invoked from network); 3 May 2004 02:49:45 -0000 Received: from unknown (HELO mailhost.calypto.com) (66.17.65.87) by sources.redhat.com with SMTP; 3 May 2004 02:49:45 -0000 Received: from rio (rio.calypto.com [192.168.100.120]) by mailhost.calypto.com (8.11.6/8.11.6) with ESMTP id i432ni705405 for ; Sun, 2 May 2004 19:49:44 -0700 From: Nick Savoiu To: gdb@sources.redhat.com Subject: Re: Improving GDB startup time with large programs Date: Mon, 03 May 2004 02:49:00 -0000 User-Agent: KMail/1.6.2 References: <20040502224944.847584B104@berman.michael-chastain.com> In-Reply-To: <20040502224944.847584B104@berman.michael-chastain.com> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200405021948.50571.savoiu@ics.uci.edu> X-SW-Source: 2004-05/txt/msg00016.txt.bz2 >> How do I profile gdb? > >When you build gdb, configure as normal. >Then use this command to build: Here's what I got (the most significant stuff) with g++ 3.2. Seems that the number of symbols is the culprit. Nick -------------------------------- Flat profile: Each sample counts as 0.01 seconds. % cumulative self self total time seconds seconds calls s/call s/call name 18.61 1.93 1.93 2013562 0.00 0.00 hash 13.55 3.33 1.41 9757458 0.00 0.00 strcmp_iw_ordered 11.86 4.57 1.23 2310964 0.00 0.00 htab_hash_string 9.55 5.55 0.99 6206314 0.00 0.00 read_partial_die 4.97 6.07 0.52 1906172 0.00 0.00 bcache_data 3.38 6.42 0.35 5101168 0.00 0.00 read_indirect_string 3.33 6.76 0.34 23770551 0.00 0.00 read_attribute_value 3.18 7.09 0.33 948693 0.00 0.00 d_print_comp 2.60 7.37 0.27 2032858 0.00 0.00 htab_find_slot_with_hash 1.59 7.53 0.17 9203512 0.00 0.00 read_unsigned_leb128 1.54 7.69 0.16 23770551 0.00 0.00 read_attribute 1.25 7.82 0.13 256652 0.00 0.00 find_last_component 1.25 7.95 0.13 131142 0.00 0.00 msymbol_hash_iw 1.16 8.07 0.12 6643402 0.00 0.00 dwarf2_lookup_abbrev 1.16 8.19 0.12 3934670 0.00 0.00 d_make_comp 1.06 8.30 0.11 1906172 0.00 0.00 add_psymbol_to_list 0.96 8.40 0.10 89224 0.00 0.00 cp_find_first_component_aux 0.87 8.49 0.09 19615690 0.00 0.00 symbol_natural_name 0.87 8.58 0.09 12864595 0.00 0.00 bfd_getl32 0.87 8.67 0.09 1699 0.00 0.00 scan_partial_symbols 0.77 8.75 0.08 2032858 0.00 0.00 symbol_set_names 0.68 8.82 0.07 11166899 0.00 0.00 read_1_byte