* Mathieu Desnoyers ([email protected]) wrote: > * Copelnug ([email protected]) wrote: > > There seems to be a bug in the LTTv statistics. > > > > The problems is visible in the function "every_event" of the lttv/stats.c > > file. That function is called for each event and receive a > > "LttvTracefileStats" structure as parameter. > > > > So if you check the value of the pointer to the "LttvTracefileStats" > > received, you can see it changing between 15 and 20 value depending of the > > trace loaded. This seems to be intended to me because each type of events is > > associated with one and only one "LttvTracefileStats" (but a structure can > > have many events type). > > > > The bug seems to be a side effect : The structure passed to the function > > contain the current path to the "current_event_types_tree" that is used to > > increase the numbers of event for the event type. Or, this value is not > > conserved between two "LttvTracefileStats" which means that the change of > > process or state only affect one "LttvTracefileStats" and let the others to > > their value. That means that some types of event are never affected by a > > change of mode or process. > > > > What this cause is : > > - Many event in process 0 and Unknown mode. > > - Difference between the total for a process of the event list in the > > textdump and the value for the process in the statistics of the same > > textdump. > > > > Is it really a problem or am I misunderstanding something ? > > Ack, I'm currently digging in the stats code to try to fix the problem. > Thanks for the precise bug report.
OK, very light testing seems to show that the fix I just did helps a lot. Can you try the lttv version at the head of the git repo ? git clone git://lttng.org/lttv.git Then make sure you got my latest commit: cd lttv git show 516a8712d079429962523e033e28f68704bc770a Please follow the quickstart guide for installation, in summary: ./autogen.sh --prefix=path_to_install CFLAGS=-g make make install I'll wait for your feedback before pushing a new release. Thanks, Mathieu > > Mathieu > > > > > Note : I use LTTv version 0.12.31 with trace version 2.5 and 2.6. > > > _______________________________________________ > > 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
