新的遗物-使用多个线程对象检测应用

Question

I have a reasonably simple Java app that reads from AWS/SQS and parses the data out using several thread groups.

Threads:

• read from SQS
• collect the output from above threads into 'blocks' by time + other keys
• once 'blocks' are at time send these to threads for writing elsewhere
• clean up

I'd like to use NewRelic to see what's happening inside these thread groups but if I put the @Trace(dispatcher=true) on more than one of the run() functions it stops reading any of them. Instead of seeing traces for all of my functions in each thread I'm not seeing much of anything.

Question:

• how would I gather metrics from an app like this? Or is it even possible?

Answer 1

FWIW - NewRelic transaction traces won't be reported for run() functions if they never exit.

EG:

public void run() {
   while(true) {
      // do some tasks
   }
}

What you can do is put @Trace statements on anything that gets called from the run() loop. If these functions exit then traces will get reported back to NR.