using statsd to profile a pyramid app

__init__.py

    config.add_subscriber(\
        "app.subscribers.statsd_timing",
        "pyramid.events.ContextFound")

subscribers.py

def _statsd_timing_callback(request):
    timer_diff = int((time.time() - request.timing_ContextFound) * 1000)
    key = 'routes.%s' % request.matched_route.name
    key = key.replace(':','_')
    utils.statsd_client.timing( key , timer_diff )
    utils.statsd_client.incr( key )

def statsd_timing(event):
    event.request.timing_ContextFound = time.time()
    event.request.add_finished_callback(_statsd_timing_callback)

utils.py

import statsd     ## https://pypi.python.org/pypi/statsd/2.0.1
statsd_client = statsd.StatsClient('localhost',8125,prefix="pyramid")