Re: [linuxtools-dev] lttng getting started : Sample Traces for Download

[Alexandre Montplaisir <alexmonthy@xxxxxxxxxxxx>]

Hi,

On 12-11-20 10:16 AM, Oberhuber, Martin wrote:
> Dear LTTng team,
>
> I'm evaluating the LTTng tooling, and I'm wondering whether you guys have any existing sample traces for download ?

There is a section for sample traces on
http://lttng.org/download
completely at the bottom. There is only one so far...

But that's a good point, it could be linked from Eclipse wiki too.

> [...]
>
> On another note, from reading the docs I don't quite understand the "Histogram" view ... am I right that the x-axis is "time" there ? Then I'd think it is an "event density" view and not a histogram. In a histogram, I'd expect events to be bucketized by other criteria eg per process ID.

That's correct, it's meant to show the event density, and the x-axis
represents time. The "histogram" nomenclature originally came from LTTV,
and we've reused it since.

I'm incidentally working on a new implementation that uses a SWTChart
histogram as backend, so it technically is a histogram ;)  The bar width
will also be configurable, I'm thinking of using a default width of 3
pixels instead of 1, it should reduce the jitter a bit.

If you have any other questions regarding LTTng or the Eclipse plugin,
please let us know.


Cheers,

-- 
Alexandre Montplaisir
DORSAL lab,
École Polytechnique de Montréal