find bottleneck of wsgi service using python cProfile

run.py

#!/usr/bin/env python
# -*- coding: gb2312 -*-
# $Id$

import os, sys, cProfile
from wsgi_handler import application

def wsgi():
    environ = dict(os.environ.items())
    environ.update({
        "SCRIPT_NAME": "/gs2/union",
        "REQUEST_METHOD": "GET",
        "PATH_INFO": "/adjs/6085502/1/1",
        "QUERY_STRING": "link_id=62",
        "REMOTE_ADDR": "218.107.55.253",
        "HTTP_REFERER": "http://xx.xx.xx",
    })

    headers_set = []
    headers_sent = []

    def write(data):
        if not headers_set:
             raise AssertionError("write() before start_response()")

        elif not headers_sent:
             # Before the first output, send the stored headers
             status, response_headers = headers_sent[:] = headers_set
             sys.stdout.write("Status: %s\r\n" % status)
             for header in response_headers:
                 sys.stdout.write("%s: %s\r\n" % header)
             sys.stdout.write("\r\n")

        sys.stdout.write(data)
        sys.stdout.flush()


    def start_response(status, response_headers, exc_info=None):
        if exc_info:
            try:
                if headers_sent:
                    # Re-raise original exception if headers sent
                    raise exc_info[0], exc_info[1], exc_info[2]
            finally:
                exc_info = None     # avoid dangling circular ref
        elif headers_set:
            raise AssertionError("Headers already set!")

        headers_set[:] = [status, response_headers]
        return write


    result = application(environ, start_response)
    try:
        for data in result:
            if data:    # don"t send headers until body appears
                write(data)
        if not headers_sent:
            write("")   # send headers now if body was empty
    finally:
        if hasattr(result, "close"):
            result.close()

wsgi()
def benchemark():
    for i in range(1000):
        wsgi()
        
cProfile.run("benchemark()", "cProfile.log")