Add stacksampler to all services

backfiller/backfiller/main.py

@@ -247,6 +247,7 @@ def main(base_dir='.', stream='', variants='', fill_wait=5, full_fill_wait=180,
 		nodes = nodes.split(',') if nodes else []
 
 	common.PromLogCountsHandler.install()
+	common.install_stacksampler()
 	prom.start_http_server(metrics_port)
 
 	if backdoor_port:

downloader/downloader/main.py

@@ -527,6 +527,7 @@ def main(channel, base_dir=".", qualities="source", metrics_port=8001, backdoor_
 	manager = StreamsManager(channel, base_dir, qualities)
 	gevent.signal(signal.SIGTERM, manager.stop) # shut down on sigterm
 	common.PromLogCountsHandler.install()
+	common.install_stacksampler()
 	prom.start_http_server(metrics_port)
 	if backdoor_port:
 		gevent.backdoor.BackdoorServer(('127.0.0.1', backdoor_port), locals=locals()).start()

restreamer/restreamer/main.py

@@ -17,7 +17,7 @@ from flask import Flask, url_for, request, abort, Response
 from gevent import subprocess
 from gevent.pywsgi import WSGIServer
 
-from common import get_best_segments, PromLogCountsHandler
+from common import get_best_segments, PromLogCountsHandler, install_stacksampler
 
 import generate_hls
 from stats import stats, after_request
@@ -421,6 +421,7 @@ def main(host='0.0.0.0', port=8000, base_dir='.', backdoor_port=0):
 	gevent.signal(signal.SIGTERM, stop)
 
 	PromLogCountsHandler.install()
+	install_stacksampler()
 
 	if backdoor_port:
 		gevent.backdoor.BackdoorServer(('127.0.0.1', backdoor_port), locals=locals()).start()