Google tcmalloc Heap Profiler

Parameters
----------

- Tor commit ID: e0b8c53f56441eb0a8d9ebc5d579b520a31291c6

- Tor run with the heap profiler command:

  $ HEAPPROFILE=/tmp/profile ~/tor/src/app/tor

- Google perf prof command to extract "inuse" data:

  $ google-pprof ~/tor/src/app/tor /tmp/profile.* --inuse_space --svg > out.svg

- For the 10 minutes loop:

---
  #!/bin/bash

  while true
  do
    torsocks wget -q -O /dev/null <URL>
    echo "Next download now..."
  done &

  echo "Looping for 10 minutes..."
  pid=$!
  sleep 600 && kill -TERM $pid && pkill tor
---


Profiling
---------

- Bootstrapping client only up to 100%. Once reached, wait 30 seconds to catch
  preemptive circuit creation.

  SVG: inuse-client-bootstrapping.svg

  $ sleep 30 && pkill tor

- Download (via wget/curl) low/high-bandwidth objects (10MB/100MB) via HTTP
  done only once.

  [exit]
    SVG: inuse-client-dl-10M-exit.svg
    SVG: inuse-client-dl-100M-exit.svg

  [.onion]
    SVG: inuse-client-dl-10M-onion.svg
    SVG: inuse-client-dl-100M-onion.svg

- Download (via wget/curl) low-bandwidth objects (10MB) via HTTP. Repeat
  download when done for 10 minutes.

  [exit]
    SVG: inuse-client-10min-dl-10M-exit.svg

  [.onion]
    SVG: inuse-client-10min-dl-10M-onion.svg

- Download (via wget/curl) high-bandwidth objects (100MB) via HTTP. Repeat
  download when done for 10 minutes.

  [exit]
    SVG: inuse-client-10min-dl-100M-exit.svg

  [.onion]
    SVG: inuse-client-10min-dl-100M-onion.svg