Hi, Did you forgot to enable some event, for example: lttng enable-event -u -a (For all userspace events)
On 2013-05-26 08:51, Aryeh Weinreb wrote: > Hi, > I'm trying to get UST working for the first time on RHEL 6.4. > > I compiled and installed the following packages: > userspace-rcu-0.7.6 > lttng-ust-2.1.2 > lttng-tools-2.0.5 > babeltrace-1.1.0 > > When I ran the sample app in lttng-ust/examples I couldn't see any traces. > > # lttng create test_session > Session test_session created. > Traces will be written in /root/lttng-traces/test_session-20130526-071315 > > # lttng start > Tracing started for session test_session > > # cd /usr/local/share/doc/lttng-ust/examples/gen-tp/ > > # make > lttng-gen-tp -o sample_tracepoint.h sample_tracepoint.tp > gcc -c -o sample.o sample.c > lttng-gen-tp -o sample_tracepoint.c sample_tracepoint.tp > lttng-gen-tp -o sample_tracepoint.o sample_tracepoint.tp > gcc -o sample sample.o sample_tracepoint.o -ldl -llttng-ust > rm sample_tracepoint.c > > # ./sample > > # lttng stop > Tracing stopped for session test_session > > # lttng view > Trace directory: /root/lttng-traces/test_session-20130526-071315 > > [error] Cannot open any trace for reading. > > [error] opening trace > "/root/lttng-traces/test_session-20130526-071315" for reading. > > [error] none of the specified trace paths could be opened. > > # ls -l /root/lttng-traces/test_session-20130526-071315 > total 0 > > > What am I doing wrong? I attached the debug log from the lttng-sessiond. > > Thanks, > Aryeh > > > _______________________________________________ > lttng-dev mailing list > [email protected] > http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
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