app/django/core/handlers/profiler-hotshot.py
author Lennard de Rijk <ljvderijk@gmail.com>
Thu, 04 Jun 2009 21:58:05 +0200
changeset 2384 71780864a5ed
parent 54 03e267d67478
permissions -rw-r--r--
Now showing link to edit the home page document on the home page. This will only show up if you have the right to edit the document. Update issue 271 Now also working for home pages.

import hotshot, time, os
from django.core.handlers.modpython import ModPythonHandler

PROFILE_DATA_DIR = "/var/log/cmsprofile"

def handler(req):
    '''
    Handler that uses hotshot to store profile data.

    Stores profile data in PROFILE_DATA_DIR.  Since hotshot has no way (that I
    know of) to append profile data to a single file, each request gets its own
    profile.  The file names are in the format <url>.<n>.prof where <url> is
    the request path with "/" replaced by ".", and <n> is a timestamp with
    microseconds to prevent overwriting files.

    Use the gather_profile_stats.py script to gather these individual request
    profiles into aggregated profiles by request path.
    '''
    profname = "%s.%.3f.prof" % (req.uri.strip("/").replace('/', '.'), time.time())
    profname = os.path.join(PROFILE_DATA_DIR, profname)
    prof = hotshot.Profile(profname)
    return prof.runcall(ModPythonHandler(), req)