Hi, I am trying to use lttng-ust-cyg-profile.
Our application is large so, so far, I only compile main.cpp with compiler option '-finstrument-functions' (I don't specify option '-pg'). Our app must be run as root so I run it, and capture with lttng, like this: lttng create app_trace lttng enable-event --userspace 'lttng_ust_tracef:*' lttng enable-channel --kernel --session app_trace kernel_channel lttng enable-event --kernel --all --channel kernel_channel --session app_trace export LD_PRELOAD=liblttng-ust-cyg-profile.so lttng start sudo -E ./myapp lttng stop I notice that many events get discarded: Warning: 198522 events were discarded, please refer to the documentation on channel configuration. I then import into TraceCompass. I see the traces in the Resources View, but when I expand Experiment > Views, all 3 'LTTng-UST CallStack' entries are striked through so I can't select them. So I can't visualise the function calls. Any idea what I am doing wrong please? Best regards, David
