Re: Runtime declare tracepoint events

Re: Runtime declare tracepoint events

[Jérémie Galarneau]

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Hi Jeffrey,

Unfortunately, this is not a feature which is currently supported by the
LTTng tracers.

All the best,
Jérémie

On Fri, Jul 31, 2015 at 10:39 PM, Jeffrey Chen <cpthk@hotmail.com> wrote:

> Hi:
>
> This is a requirement for us, we do not know the events during compile
> time. I am wondering is it easy to do to register tracepoint events during
> runtime. Has this been done before? Is there any document about it? Thanks.
>
>
>
> _______________________________________________
> lttng-dev mailing list
> lttng-dev@lists.lttng.org
> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>
>


-- 
Jérémie Galarneau
EfficiOS Inc.
http://www.efficios.com

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Re: Runtime declare tracepoint events

[Julien Desfossez]

Hi,

Just to make sure we are talking about the same thing, do you mean that
you don't know at compile time where the instrumentation sites are in
the code (not supported in LTTng for now), or that you don't know which
one you want to enable (record). If it is the latter case, LTTng
supports enabling/disabling events at runtime (see the "lttng
enable-event" command).

Julien

On 15-07-31 10:39 PM, Jeffrey Chen wrote:
> Hi:
> 
> This is a requirement for us, we do not know the events during compile
> time. I am wondering is it easy to do to register tracepoint events
> during runtime. Has this been done before? Is there any document about
> it? Thanks.
> 
>  
> 
> 
> _______________________________________________
> lttng-dev mailing list
> lttng-dev@lists.lttng.org
> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
> 

Runtime declare tracepoint events

[Jeffrey Chen]

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Hi:

This is a requirement for us, we do not know the events during compile time. I am wondering is it easy to do to register tracepoint events during runtime. Has this been done before? Is there any document about it? Thanks.

 
 		 	   		  

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