On Mon, Jun 12, 2017 at 6:21 PM, Deneau, Tom <tom.den...@amd.com> wrote: > > I am using the babeltrace python3 bindings on a trace collected with > event-loss-mode > set to discard. The tracecollection is a combination of a kernel channel and > a usermode > channel. How can I tell whether there are any lost events in this trace?
Hello Tom. Unfortunately, the `babeltrace` Python module/package does not offer an API to check for discarded events directly. What you could try is to check the packet context's `events_discarded` field for each event (not tested): from babeltrace import CTFScope for event in my_trace_collection.events: ed_field = event.field_with_scope('events_discarded', CTFScope.STREAM_PACKET_CONTEXT) if ed_field is not None and ed_field != 0: path = event.handle.path print('{} discarded events so far in `{}`.'.format(ed_field, path)) Babeltrace 2 will offer an API (with both the native C/C++ API and the Python bindings) to check this more naturally. Basically, with the Babeltrace 2 API, you do not iterate on events only, but on other notifications as well, some of them being dicarded events (at tracing time) and discarded packets (at tracing time). The upcoming `bt2` Python package is not available yet as of Babeltrace 2.0.0-pre1, the current release as of this date. Hope it helps, Phil > > -- Tom Deneau > > _______________________________________________ > lttng-dev mailing list > lttng-dev@lists.lttng.org > https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev