[lttng-dev] Live reading without using disk

[Matthew Khouzam]

Hi,

One way is to connect directly to the LTTng Relayd. I believe Julien
Desfossez can comment better than me, but I think LTTngtop does not use
the disk so it can be a nice starting point. If java is more your thing,
TMF (soon to be tracecompass, hopefully?) has connectors to the relayd
that can be re-used too.

IMO:
if you want pretty graphs in a UI, tmf is the way to go
pretty graphs saved as pngs, python with relayd is a nice alternative
real time monitoring, just use lttngtop, and extend it!

BR,
Matthew



On 14-09-17 06:50 AM, Elie Abi Saad wrote:
> Hi,
>
> I want to make statistics on tracepoints at runtime and would like to know if
> there is a way to do live reading on traces without flushing them on disk.
>
> Live mode seems good to me, but do continuously write traces on disk, and
> snapshot mode sounds perfect with the ring buffer mechanism, but we still need
> to record snapshots to read traces.
>
> Any suggestions?
>
> Cheers,
>