Thanks for your prompt response Mathieu. Can I expect this to happen soonish?

On Thu, Oct 25, 2018 at 6:02 AM Mathieu Desnoyers <mathieu.desnoyers@efficios.com> wrote:

----- On Oct 24, 2018, at 11:05 PM, Alok Priyadarshi <alokpr@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

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

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--

Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com