From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 7275 invoked by alias); 16 Jul 2007 11:38:33 -0000 Received: (qmail 7036 invoked by uid 22791); 16 Jul 2007 11:38:31 -0000 X-Spam-Check-By: sourceware.org Received: from smtp7k.poczta.onet.pl (HELO smtp7k.poczta.onet.pl) (213.180.130.85) by sourceware.org (qpsmtpd/0.31) with ESMTP; Mon, 16 Jul 2007 11:38:23 +0000 Received: from pmq3.test.onet.pl ([192.168.246.3]:35757 "EHLO pmq3") by kps7.test.onet.pl with ESMTP id convert rfc822-to-8bit (ORCPT + 1 other); Mon, 16 Jul 2007 13:38:08 +0200 Received: from 136.182.158.153 by 192.168.240.169 with HTTP; Mon, 16 Jul 2007 13:38:08 +0200 ,from 175.28.12.111 by 136.182.158.153 with HTTP Date: Mon, 16 Jul 2007 11:49:00 -0000 From: m.sikorski0@poczta.onet.pl Cc: gdb@sourceware.org To: gdb@sourceware.org, Jim Blandy , gdb@sourceware.org Subject: Re: Remote mutli-threaded debugging with large number of threads X-Mailer: onet.poczta Message-ID: In-Reply-To: Q14738992-a72864cae1cea34f1df3c0a1c40105f8@pmq5.test.onet.pl MIME-Version: 1.0 Content-Type: text/plain Content-Disposition: inline Content-Transfer-Encoding: 8BIT Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org X-SW-Source: 2007-07/txt/msg00126.txt.bz2 Message-ID: <20070716114900.srywcZNuyXsZQ68MFMf8CZRoXGngbYF90mHyYdXW6Fc@z> After looking further into it and trying to narrow down issue cause I found out that probably not number of threads does matter here, but amount of debug information or binary size. The improper case operated on binary of ~17MB (with debug symbols) - after removing symbols from all app threads except of one it seems to be working fine (binary size reduced to ~7MB). Does anyone have any comments/suggestions? Is there any configuration change to support large binaries or is this simply a bug in GDB? Regards Maciej Sikorski m.sikorski0@poczta.onet.pl napisa³: >Here are logs from this case (and for good one as comparison below). >(gdb) info threads >Sending packet: $mf933d58,4#a3...Ack >Packet received: 9421ffa0 >Sending packet: $mf933d5c,4#ce...Ack >Packet received: 7c0802a6 >Sending packet: $mf933d60,4#9c...Ack >Packet received: 480182bd >Sending packet: $mf933d64,4#a0...Ack >Packet received: 93010040 >Sending packet: $mf933d64,4#a0...Ack >Packet received: 93010040 >Sending packet: $mf933d68,4#a4...Ack >Packet received: 7c982378 >Sending packet: $mf933d6c,4#cf...Ack >Packet received: 93a10054 >Sending packet: $mf933d70,4#9d...Ack >Packet received: 3ba00000 >Sending packet: $mf933d74,4#a1...Ack >Packet received: 93c10058 >Sending packet: $mf933d78,4#a5...Ack >Packet received: 7fc802a6 >Sending packet: $mf933d7c,4#d0...Ack >Packet received: 93e1005c >Sending packet: $mf933d80,4#9e...Ack >Packet received: 7c7f1b78 >Sending packet: $mf933d84,4#a2...Ack >Packet received: 90010064 >Sending packet: $mf933d88,4#a6...Ack >Packet received: 38000001 >Sending packet: $mf933d8c,4#d1...Ack >Packet received: 92e1003c >Sending packet: $mf933d90,4#9f...Ack >Packet received: 93210044 >Sending packet: $mf933d94,4#a3...Ack >Packet received: 93410048 >Sending packet: $mf933d98,4#a7...Ack >Packet received: 9361004c >Sending packet: $mf933d9c,4#d2...Ack >Packet received: 93810050 >Sending packet: $mf933da0,4#c7...Ack >Packet received: 7d201828 >Sending packet: $m7ffff360,4#35...Ack >Packet received: 7ffff3c0 >Sending packet: $qfThreadInfo#bb...Ack >Packet received: m5138 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5288 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5287 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5286 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5285 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5284 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5283 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5282 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5281 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5203 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m516d >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m516c >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m516b >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m516a >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5169 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5168 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5167 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5166 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5165 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5164 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5163 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5162 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5161 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5160 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m515f >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m515e >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m515d >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m515c >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m515b >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m515a >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5159 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5158 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5157 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5156 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5155 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5154 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5153 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5152 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5151 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5150 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m514f >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m514e >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m514d >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m514c >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m514b >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m514a >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5149 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5147 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5146 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5144 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5143 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5142 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5141 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5140 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m513f >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m513e >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m513d >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m513c >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m513b >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m513a >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m5139 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: l >Sending packet: $qThreadExtraInfo,5139#57...Ack >Packet received: >Sending packet: $qP0000001f0000000000005139#8a...Ack >Packet received: >Sending packet: $Hg5139#81...Ack >Packet received: OK >Sending packet: $p40#d4...Ack >Packet received: >Sending packet: $g#67...Ack >Packet received: 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 >Sending packet: $m0,4#fd...Ack >Packet received: E01 >Sending packet: $m0,4#fd...Ack >Packet received: E01 >Sending packet: $mfffffffc,4#fa...Ack >Packet received: E01 >Sending packet: $mfffffffc,4#fa...Ack >Packet received: E01 >Sending packet: $m0,4#fd...Ack >Packet received: E01 >Sending packet: $m0,4#fd...Ack >Packet received: E01 >Sending packet: $mfffffffc,4#fa...Ack >Packet received: E01 >Sending packet: $mfffffffc,4#fa...Ack >Packet received: E01 > 61 Thread 20793 0x00000000 in ?? () >Sending packet: $qP0000001f000000000000513a#b2...Ack >Packet received: >Sending packet: $Hg513a#a9...Ack >Packet received: OK >Sending packet: $g#67...Ack >Packet received: 000000dd311442f03114bf80000000040000000000000000000000000f936aec0002d0000000000031144b7831144f88d4410000105724bc39c0629839c0627839c0625810b53048300287580000000010b53b083114449010b531d40000000000000002000000020000000010b531b010b52cc0000000020f94c02010b531b4000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000f93670c0002d000380444820f9366f0000000002000000000000000 >Sending packet: $m0,4#fd...Ack >Packet received: E01 >Sending packet: $m0,4#fd...Ack >Packet received: E01 >Sending packet: $mfffffffc,4#fa...Ack >Packet received: E01 >Sending packet: $mfffffffc,4#fa...Ack >Packet received: E01 >Sending packet: $m0,4#fd...Ack >Packet received: E01 >Sending packet: $m0,4#fd...Ack >Packet received: E01 >Sending packet: $mfffffffc,4#fa...Ack >Packet received: E01 >Sending packet: $mfffffffc,4#fa...Ack >Packet received: E01 > 60 Thread 20794 0x00000000 in ?? () > > >good case: >(gdb) info threads >Sending packet: $mf933d58,4#a3...Ack >Packet received: 9421ffa0 >Sending packet: $mf933d5c,4#ce...Ack >Packet received: 7c0802a6 >Sending packet: $mf933d60,4#9c...Ack >Packet received: 480182bd >Sending packet: $mf933d64,4#a0...Ack >Packet received: 93010040 >Sending packet: $mf933d64,4#a0...Ack >Packet received: 93010040 >Sending packet: $mf933d68,4#a4...Ack >Packet received: 7c982378 >Sending packet: $mf933d6c,4#cf...Ack >Packet received: 93a10054 >Sending packet: $mf933d70,4#9d...Ack >Packet received: 3ba00000 >Sending packet: $mf933d74,4#a1...Ack >Packet received: 93c10058 >Sending packet: $mf933d78,4#a5...Ack >Packet received: 7fc802a6 >Sending packet: $mf933d7c,4#d0...Ack >Packet received: 93e1005c >Sending packet: $mf933d80,4#9e...Ack >Packet received: 7c7f1b78 >Sending packet: $mf933d84,4#a2...Ack >Packet received: 90010064 >Sending packet: $mf933d88,4#a6...Ack >Packet received: 38000001 >Sending packet: $mf933d8c,4#d1...Ack >Packet received: 92e1003c >Sending packet: $mf933d90,4#9f...Ack >Packet received: 93210044 >Sending packet: $mf933d94,4#a3...Ack >Packet received: 93410048 >Sending packet: $mf933d98,4#a7...Ack >Packet received: 9361004c >Sending packet: $mf933d9c,4#d2...Ack >Packet received: 93810050 >Sending packet: $mf933da0,4#c7...Ack >Packet received: 7d201828 >Sending packet: $m7ffff350,4#34...Ack >Packet received: 7ffff3b0 >Sending packet: $qfThreadInfo#bb...Ack >Packet received: m2a02 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m2a50 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m2a4f >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m2a11 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m2a10 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m2a0e >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m2a0d >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m2a0c >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m2a0b >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m2a0a >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m2a09 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m2a08 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m2a07 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m2a06 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m2a05 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m2a04 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: m2a03 >Sending packet: $qsThreadInfo#c8...Ack >Packet received: l >Sending packet: $qThreadExtraInfo,2a03#7b...Ack >Packet received: >Sending packet: $qP0000001f0000000000002a03#ae...Ack >Packet received: >Sending packet: $Hg2a03#a5...Ack >Packet received: OK >Sending packet: $p40#d4...Ack >Packet received: >Sending packet: $g#67...Ack >Packet received: 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 >Sending packet: $mf211518,4#65...Ack >Packet received: 7c000026 >Sending packet: $mf211514,4#61...Ack >Packet received: 44000002 >Sending packet: $mf211518,4#65...Ack >Packet received: 7c000026 >Sending packet: $mf211514,4#61...Ack >Packet received: 44000002 > 17 Thread 10755 0x0f211518 in do_sigwaitinfo () from /tftpboot/nfs/lib/tls/libc.so.6 >Sending packet: $qP0000001f0000000000002a04#af...Ack >Packet received: >Sending packet: $Hg2a04#a6...Ack >Packet received: OK >Sending packet: $g#67...Ack >Packet received: 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 >Sending packet: $mf93670c,4#9f...Ack >Packet received: 7c000026 >Sending packet: $mf936708,4#74...Ack >Packet received: 44000002 >Sending packet: $mf93670c,4#9f...Ack >Packet received: 7c000026 >Sending packet: $mf936708,4#74...Ack >Packet received: 44000002 > 16 Thread 10756 0x0f93670c in sem_wait@GLIBC_2.0 () from /tftpboot/nfs/lib/tls/libpthread.so.0 >Sending packet: $qP0000001f0000000000002a05#b0...Ack > >U¿ytkownik Jim Blandy napisa³: >>m.sikorski0@poczta.onet.pl writes: >>> Hello, >>> I faced recently strange issue using remote gdb debugging (cross i386-ppc). With ~60 threaded application debugging does not work well. >>> >>> Info threads returns incomplete information: >>> (gdb) info threads >>> 60 Thread 2150 0x00000000 in ?? () >>> 59 Thread 2151 0x00000000 in ?? () >>> 58 Thread 2152 0x00000000 in ?? () >>> 57 Thread 2153 0x00000000 in ?? () >>> 56 Thread 2155 0x00000000 in ?? () >>> 55 Thread 2156 0x00000000 in ?? () >>> 54 Thread 2157 0x00000000 in ?? () >>> ... >> >>That is disappointing. Can you type 'set debug remote 1' and see what >>information the stub is returning to GDB for these threads? >> >