* Birken, Klaus ([email protected]) wrote: > 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.
That is not related. > - 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. Hrm, you might want to try with newer lttv versions, just in case we fixed this. Thanks, Mathieu > > 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 > -- 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
