[lttng-dev] Front-end for LTTng

Jonathan Rajotte-Julien jonathan.rajotte-julien at efficios.com
Fri Mar 16 13:42:22 EDT 2018

Hi Nesrine,

On Fri, Mar 16, 2018 at 04:46:33PM +0100, Nesrine Zouari wrote:
> Hello,
> I am computer engineering student and I am actually working on my
> graduation project which is about Qemu Trace.
> In this project, Qemu is considered as a user-space instrumented
> application. I have used LTTng-Tools to control Qemu trace.
> Now, I aim to develop an application which is a front-end to LTTng. This
> application should be able to control the Qemu Trace (start, stop ..) and
> to visualize the traces.

You might want to take a look at Tracecompass [1]. Tracecompass already seems to
support some form of analysis for Virtual Machine [2]. Tracecompass also have
widget for remote controll of LTTng via ssh [3].

> My question is the following: Could my application communicate with LTTng
> through TCP protocol ?? If yes, could you give me some hints ??
> I know that LTTng can control trace in a streaming mode using the TCP
> protocol, but this is not my use case.

LTTng offers a CLI and a C API. LTTng does not offer any direct way to perform control
operations over TCP.


[1] http://tracecompass.org/
[2] http://archive.eclipse.org/tracecompass/doc/stable/org.eclipse.tracecompass.doc.user/Virtual-Machine-Analysis.html
[3] http://archive.eclipse.org/tracecompass/doc/stable/org.eclipse.tracecompass.doc.user/LTTng-Tracer-Control.html

> Best regards,
> -----------------------------------------------------------------------------------------
> Nesrine ZOUARI
> Computer Engineering Student
> Department of Computer Engineering and Applied Mathematics
> National Engineering School of Sfax (ENIS)
> University of Sfax-Tunisia
> Tel: +216 52 620 475
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Jonathan Rajotte-Julien

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