* fabien royer ([email protected]) wrote: > Hi all, > > > I have installed successfully the LTTng on the beagle board and compile the > sample kernel modules. > > > > I would like to trace some part of the Linux kernel and I am starting with > the module examples. However I am not quite sure to understand. If I am > using lttv-gui to trace the marker example, it makes no difference to me > than when I don’t run it ! I mean to say I don’t understand where the > important data is while looking at the lttv gui as it just look the same to > me when I run the example and when I don’t. > > > > I am using Linux Trace Toolkit Visualizer 0.12.30-02102010 and Linux > beagleboard 2.6.33.1-ga0ff4c3 > > Can please someone tell know if I am doing it the right way first and then > let me know what is the critical information I should see with the marker > and traepoint example within the llt viewer. >
There are a few ways to precisely get your info. You can either: lttv -m textDump -t path_to_trace |grep "some ascii text expected" or use the filter (available both in the gui and textDump) to filter by channel and event name. Mathieu > > > Thanks in advance, > > Regards, > > Fabien > > > > $ dmesg > > ….. > > ….. > > LTT state dump begin > > LTT state dump thread start > > LTT state dump end > > example init > > Value 123, string example string > > example exit > > Number of event b : 10 > > LTT: 367 events written in channel syscall_state (cpu 0, index 0) > > LTT: 32 events written in channel softirq_state (cpu 0, index 0) > > LTT: 131 events written in channel task_state (cpu 0, index 0) > > LTT: 359 events written in channel fd_state (cpu 0, index 0) > > LTT: 3092 events written in channel vm_state (cpu 0, index 0) > > LTT: 17 events written in channel irq_state (cpu 0, index 0) > > LTT: 3 events written in channel netif_state (cpu 0, index 0) > > LTT: 1 events written in channel global_state (cpu 0, index 0) > > LTT: 34235 events written in channel kernel (cpu 0, index 0) > > LTT: 1758 events written in channel mm (cpu 0, index 0) > > LTT: 5992 events written in channel fs (cpu 0, index 0) > > LTT: 1110 events written in channel rcu (cpu 0, index 0) > > LTT: 4421 events written in channel net (cpu 0, index 0) > > LTT: 352 events written in channel block (cpu 0, index 0) > > LTT: 298 events written in channel metadata (cpu 0, index 0) > _______________________________________________ > 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
