[lttng-dev] User-space tracing by the root lttng-sessiond

[Thibault, Daniel]

> >  (Question: If there were several users active at once, would there be 
> > several root user-space lttng-consumerd daemons or still just one?)
>
> no

   Please clarify: no, there will be several root user-space lttng-consumerd daemons or no, there will be just one root user-space lttng-consumerd daemon?

> >    This seems problematic to me, since multiple traces capturing the same event won't be able to reconcile their copies with each other.
>
> since timestamps have to match the event physical order in the streams, we need to assign one timestamp for each buffer. no way around this.

   Are the time-stamps issued by the tracepoint provider or by the "buffer registrar" (i.e. the time-stamp is looked up when the event is written to the buffer)?

Daniel U. Thibault
Protection des systèmes et contremesures (PSC) | Systems Protection & Countermeasures (SPC)
Cyber sécurité pour les missions essentielles (CME) | Mission Critical Cyber Security (MCCS)
R & D pour la défense Canada - Valcartier (RDDC Valcartier) | Defence R&D Canada - Valcartier (DRDC Valcartier)
2459 route de la Bravoure
Québec QC  G3J 1X5
CANADA
Vox : (418) 844-4000 x4245
Fax : (418) 844-4538
NAC : 918V QSDJ <http://www.travelgis.com/map.asp?addr=918V%20QSDJ>
Gouvernement du Canada | Government of Canada
<http://www.valcartier.drdc-rddc.gc.ca/>