* Alessandro Morari ([email protected]) wrote: > > Hi, > > I'm installing LTTng on a BlueGene/P cluster, with Linux 2.6.29.1, > patch-2.6.29.1-lttng-0.124 and ltt-control-0.75-15112-2009. > After installing the patch and compiling the daemon, I run:
First make sure all the LTTng probe modules are loaded, and also ensure that you run "ltt-armall" before using lttctl. Please refer to the LTTng Manual on the lttng.org website for details. Thanks, Mathieu > > > lttctl -C -w ~/trace1 trace1 > And I obtain: > >Linux Trace Toolkit Trace Control 0.75-15112009 > > > >Controlling trace : trace1 > > > >lttctl: Creating trace > >lttctl: Forking lttd > >Linux Trace Toolkit Trace Daemon 0.75-15112009 > > > >Reading from debugfs directory : /mnt/debugfs/ltt/trace1 > >Writing to trace directory : /root/trace1 > > > >lttctl: Starting trace > and then I do the command: > >lttctl -D -w ~/trace1 trace1 > and I obtain : > >Linux Trace Toolkit Trace Control 0.75-15112009 > > > >Controlling trace : trace1 > > > >lttctl: Pausing trace > >lttctl: Forking lttd > >Linux Trace Toolkit Trace Daemon 0.75-15112009 > > > >Reading from debugfs directory : /mnt/debugfs/ltt/trace1 > >Writing to trace directory : /root/trace1 > > > >No channel available for reading, exiting > >lttd process running failed > > > > > /mnt/debugfs/ltt/control/trace1/channel contains only the directory > metadata > I verified what happen inside the code and it seems that only the > "metadata" > channel exists. > > What may be the cause of the problem? > > Thanks, > > -- > Alessandro > _______________________________________________ > 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
