Visualizing the flow with LTTng and trace-cmd

In the previous chapter, we saw how we can visualize the flow of threads across the processor(s) with perf (and a few alternatives). Now, we proceed to do so with more powerful, more visual profiling tools: with LTTng (and the Trace Compass GUI) and with trace-cmd (an Ftrace frontend and the KernelShark GUI).

Do note that the intent here is to introduce you to these powerful tracing technologies only; we do not have the scope nor space required to do full justice to these topics.