app/django/core/handlers/profiler-hotshot.py
author Pawel Solyga <Pawel.Solyga@gmail.com>
Thu, 16 Oct 2008 15:22:41 +0000
changeset 358 843d83b87282
parent 54 03e267d67478
permissions -rw-r--r--
Add page=None parameter to all views. Information from page argument (which is soc.logic.site.page.Page object) is going to be used later in views code and for some context values. Fix some indentions in __doc__ strings. Add proper __doc__ string for all() function in sponsor/list.py module. Patch by: Pawel Solyga Review by: to-be-reviewed

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)