----- On Oct 24, 2018, at 11:05 PM, Alok Priyadarshi <alo...@gmail.com> wrote:
> I am trying to add a thread timestamp to trace events. By thread timestamp I > mean the value returned by clock_gettime(CLOCK_THREAD_CPUTIME_ID): > [ https://linux.die.net/man/3/clock_gettime | > https://linux.die.net/man/3/clock_gettime ] > I could do this by creating custom events, but I am wondering if there is > already a way to add this information to event context. I have tried using the > following arguments to lttng-add-context, but none of them add any additional > information: > perf:cpu:cpu-cycles > perf:cpu:cycles > perf:thread:cpu-cycles > perf:thread:cycles > Note that I have only enabled userspace events. I use the following sequence > of > commands to capture trace: > lttng create > lttng enable-event --userspace --all > lttng add-context --userspace -t vpid -t vtid -t perf:thread:cycles > lttng start > lttng stop We would need to extend lttng-ust implementation and lttng-tools to add those additional contexts. It would make sense to add these. Thanks, Mathieu > _______________________________________________ > lttng-dev mailing list > lttng-dev@lists.lttng.org > https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com
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