[lttng-dev] Live reading without using disk

[Elie Abi Saad]

2014-09-17 17:10 GMT+02:00 Matthew Khouzam <matthew.khouzam at ericsson.com>:
> 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.

But as I’m understanding things, the lttng-relayd needs an output, a base
directory, where traces are actually written to disk, isn't it?

> 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!

In fact I'm not interested in UI, I would like to do automatic analysis at
runtime, mostly on user space tracepoints.

Thanks,

-- 
Elie Abi Saad