app/django/core/handlers/profiler-hotshot.py
author Sverre Rabbelier <srabbelier@gmail.com>
Thu, 09 Oct 2008 23:50:00 +0000
changeset 295 651d9eabdef7
parent 54 03e267d67478
permissions -rw-r--r--
Removed now-obsolete getAltResponse* methods from simple.py The getAltResponse* methods have been replaced by the check* methods in soc.logic.helper.access. Patch by: Sverre Rabbelier Reviewed by: Pawel Solyga, Augie Fackler, Todd Larsen Reviewed at: http://codereviews.googleopensourceprograms.com/1601 Review id: 1601

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)