[lttng-dev] Add pid context to UST events

[Mathieu Desnoyers]

* Bernd Hufmann (bhufmann at gmail.com) wrote:
> Hi Mathieu
> 
> This is an important information. Is this documented?
> The Eclipse implementation of the Trace Control doesn't support that.
> It also uses "-t pid" for UST.
> Could you please list all the differences for contexts name for UST?
> Maybe I can squeeze in a fix
> before the Eclipse Juno release.

Sure. The contexts supported by LTTng-UST 2.0 are:

procname, pthread_id, vpid, vtid

Thanks,

Mathieu

> 
> Thanks
> Bernd
> 
> 
> On Fri, Jun 1, 2012 at 11:53 AM, Mathieu Desnoyers
> <mathieu.desnoyers at efficios.com> wrote:
> > * Francis Giraldeau (francis.giraldeau at gmail.com) wrote:
> >> Hi,
> >>
> >> I tried to add pid context to UST events to distinguish events from
> >> multiple processes. I do have this error:
> >>
> >> $ lttng create bidon
> >> Session bidon created.
> >> Traces will be written in /home/francis/lttng-traces/bidon-20120601-142031
> >>
> >> $ lttng enable-event -a -u
> >> All UST events are enabled in channel channel0
> >>
> >> $ lttng add-context -u -t pid
> >> Error: pid: UST invalid context
> >> Warning: Some command(s) went wrong
> >>
> >> Am I doing something wrong?
> >
> > lttng add-context -u -t vpid
> >
> > should do it. (notice the "v").
> >
> > Eventually we should implement something that looks like a
> >
> > lttng list -u --context
> >
> > to list the per-domain contexts available.
> >
> > Thanks,
> >
> > Mathieu
> >
> >>
> >> Thanks!
> >>
> >> Francis
> >>
> >
> >
> >
> >> _______________________________________________
> >> lttng-dev mailing list
> >> lttng-dev at lists.lttng.org
> >> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
> >
> >
> > --
> > Mathieu Desnoyers
> > Operating System Efficiency R&D Consultant
> > EfficiOS Inc.
> > http://www.efficios.com
> >
> > _______________________________________________
> > lttng-dev mailing list
> > lttng-dev at lists.lttng.org
> > http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev

-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com