Probnik (Erlang/BEAM Node Health Monitor)

Android running this Scenic app.

I	II

Run:

iex --sname probnik@localhost --cookie secret_token -S mix scenic.run

UI Overview (current layout)

1. Memory Top 5
   • Top processes by memory (MB).
2. Message Queue Top 5
   • Top processes by message_queue_len (count).
3. Scheduler Pressure
   • Tape-style gauge showing combined pressure:
     • avg scheduler utilization (wall-time)
     • normalized run-queue pressure
   • Run-queue stats printed inside the gauge:
     • RunQ total
     • RunQ average
     • RunQ skew (max - min)
     • avg util (%)
   • Run-queue trend (Δ runq/sec):
     • Large + / - values at left
     • Mini VSI dial to the right
4. Memory Breakdown
   • Distribution across:
     • Processes, ETS, Binary, Code, Other

Data Sources

• recon:proc_count/2 for per-process top 5 (memory, msgq)
• erlang:memory/0 for memory breakdown
• recon:scheduler_usage/1 + erlang:statistics/1 for scheduler pressure and run queue

Android build (Path A)

See android/README.md and android/env.sh for the current Android setup notes.