Hi Mathieu, yes, we did:
ltt-armall lttctl -C -w /tmp/trace1 trace1 ... Lttctl -D trace1 ---------------------------------------- Two more details that might be related to the problem: - while loading the kernel modules, the modules jbd2-trace and ext4-trace could not be found. - when I start lttv-gui with --debug, the warnings are still issued, but sometimes the application doesn't crash (but is _very_ slow). Seems to be a race condition, though. Regards, Klaus >-----Ursprüngliche Nachricht----- >Von: [email protected] [mailto:[email protected]] Im Auftrag von >Mathieu Desnoyers >Gesendet: Dienstag, 24. Mai 2011 15:48 >An: Birken, Klaus >Cc: [email protected] >Betreff: Re: [ltt-dev] [LTTV] segmentation fault while reading traces > >* Birken, Klaus ([email protected]) wrote: >> Hi all, >> >> when opening a LTT kernel trace, lttv-gui reports some "Cannot find >> pin_in in schedchange" messages and segv's soon afterwards. >> >> My configuration on target: x86, multicore (via hyperthreading), >> kernel 2.6.36, patched with LTTng 0.245, modules 0.19.6, LTT control >> 0.89. >> >> I am using the VMware image of the LTTng demo machine (latest >> downloaded), this is 0.12.37. Attached is the shell output. >> >> BTW: While configuring the patched kernel, we couldn't find the Kernel >> Option "Immediate value optimization" in menuconfig. However, this has >> been mentioned in the manual: >> >http://git.lttng.org/?p=lttv.git;a=blob_plain;f=LTTngManual.html#install >lttng >> >> Might this be a serious problem leading to crashing lttv-gui? > >No. Immediate value config is deprecated/removed from the tree anyway. > >Did you run ltt-armall before tracing ? > >Mathieu > >> >> Thanks in advance, regards, >> Klaus Birken >> >> >> >> >> >> >> [cid:[email protected]] >> >> >> >> >> >> Raiffeisenstr. 34 >> 70794 Filderstadt >> Phone: +49 711 90770 540 >> Fax: +49 711 90770 300 >> Mobile: +49 160 96969364 >> Email: [email protected]<mailto:[email protected]> >> Web: www.harman.com >> >> DR. KLAUS BIRKEN >> Senior Software Architect >> Harman/Becker Automotive Systems >> >> >> >> >> >> >> Confidentiality Notice: This e-mail message, including any >attachments, is for the sole use of the intended recipient(s) and may >contain confidential and privileged information. Any unauthorized >review, use, disclosure or distribution is prohibited. If you are not >the intended recipient, please contact the sender by return e-mail and >destroy all copies of the original message. >> >> >> > > > >Content-Description: lttv_crash.txt >> demo@lttngdemo:~/pgm/traceout/tpoc$ lttv-gui --sync >> ** Message: statistics viewer : background computation data ready. >> ** Message: statistics viewer : background computation data ready. >> >> ** (lttv.real:2066): WARNING **: Trace 0 contains no >net.dev_xmit_extended marker >> >> >> ** (lttv.real:2066): WARNING **: Trace 0 contains no >net.tcpv4_rcv_extended marker >> >> >> ** (lttv.real:2066): WARNING **: Cannot find pin_in in schedchange 696 >> >> ** (lttv.real:2066): WARNING **: Cannot find pin_in in schedchange 697 >> >> ** (lttv.real:2066): WARNING **: Cannot find pin_in in schedchange 698 >> >> ** (lttv.real:2066): WARNING **: Cannot find pin_in in schedchange 696 >> >> ** (lttv.real:2066): WARNING **: Cannot find pin_in in schedchange 697 >> >> ** (lttv.real:2066): WARNING **: Cannot find pin_in in schedchange 698 >> /usr/bin/lttv-gui: line 10: 2066 Segmentation fault >$LTTV_CMD.real -m lttvwindow -m guievents -m guifilter -m guicontrolflow >-m resourceview -m guistatistics -m guitracecontrol $* >> demo@lttngdemo:~/pgm/traceout/tpoc$ >> > >> _______________________________________________ >> ltt-dev mailing list >> [email protected] >> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev > > >-- >Mathieu Desnoyers >Operating System Efficiency R&D Consultant >EfficiOS Inc. >http://www.efficios.com _______________________________________________ ltt-dev mailing list [email protected] http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
