inefficient execution of tracers?

[yarikoptic]

while running tracing (e.g. reproman execute -r localshell --trace -- python -m nose -s -v reproman/tests/test_api.py) you can see that there is not that much of activity from reproman/python/dpkg/conda either in CPU or disk. Overall it runs really slow, must be due to some blocking (ATM though running jitsi so it is known to slow things down). We need to figure out how to make it faster.

this is my localshell resource definition

localshell:
  id: thebest
  name: localshell
  status: available
  type: shell

[chaselgrove]

It finishes in 24s for me with reproman >= 25% CPU the whole time. What are you seeing?