. Why is debugger use generally limited on Erlang?
. What are the options you can use to trace OTP processes?
. What determines whether a given set of functions or processes get traced?
. How can you stop tracing with recon_trace? With other tools?
. How can you trace non-exported function calls?
. When would you want to move time stamping of traces to the VM’s trace mechanisms directly? What would be a possible downside of doing this?
. Imagine that traffic sent out of a node does so over SSL, over a multi-tenant system. However, due to wanting to validate data sent (following a customer complain), you need to be able to inspect what was seen clear text. Can you think up a plan to be able to snoop in the data sent to their end through the ssl socket, without snooping on the data sent to any other customer?
Using the code at https://github.com/ferd/recon_demo (these may require a decent understanding of the code there):
. Can chatty processes (council_member) message themselves? (hint: can this work with registered names? Do you need to check the chattiest process and see if it messages itself ?)
. Can you estimate the overall frequency at which messages are sent globally?
. Can you crash a node using any of the tracing tools? (hint: dbg makes it easier due to its greater flexibility)