[lttng-dev] Question about zero metadata

[David Goulet]

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Hi Zheng,

In order to be able to read the trace, you have to stop the session
(lttng stop) and a flush is automatically done in the background.

However, reading a trace while it is being created (live reading) is
on the roadmap for LTTng 2.2 or later.

So, for now, you need to start/stop the tracing session.

Thanks!
David

changz:
> Hi all,
> 
> I tried to generate one event and view the trace at run-time. It
> didn't work because metadata was zero. And then I found metadata
> couldn't be dumped to disk when sub-buffer were not filled(i.e.
> consumer daemon didn't read data from ring-buffer). And seems no
> timer to flush it because I waited for very long time. Once I
> stopped lttng or the application, metadata got ready at once.
> 
> My lttng version is 2.01. Is this a known issue?
> 
> Thanks Zheng
> 
> _______________________________________________ lttng-dev mailing
> list lttng-dev at lists.lttng.org 
> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
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