python httplib和urllib的性能比较

httplib代码：

        urlParseResult = urlparse(url)
        host = urlParseResult.hostname
        path = urlParseResult.path
        conn = httplib.HTTPConnection(host)
        base64string = base64.encodestring('%s:%s' % (username, password)).replace('\n', '')
        conn.putheader("Authorization", "Basic %s" % base64string)
        conn.endheaders()  

        conn.request("GET", path)

        try:
            with open(localLogFile, "wb") as code1:
                with contextlib.closing(conn) as conn:
                    response = conn.getresponse()
                    while True:
                        data = response.read(defaultBlock)
                        if not len(data):
                            print str(self.logDate)+"-"+localLogFileName+"获取成功！"
                            return
                        else:
                            code1.write(data)
        except urllib2.HTTPError as httpError:
            if httpError.code == httplib.NOT_FOUND:
                print url+"is not found,404"
            else:
                raise

urllib代码：

        defaultBlock = 2048
        base64string = base64.encodestring('%s:%s' % (username, password)).replace('\n', '')
        conn = urllib2.Request(url)
        conn.add_header("Authorization", "Basic %s" % base64string)
        try:
            with open(localLogFile, "wb") as code1:
                with contextlib.closing(urllib2.urlopen(conn)) as result:
                    while True:
                        data = result.read(defaultBlock)
                        if not len(data):
                            print str(self.logDate)+"-"+localLogFileName+"获取成功！"
                            return
                        else:
                            code1.write(data)
        except urllib2.HTTPError as httpError:
            if httpError.code == httplib.NOT_FOUND:
                print url+"is not found,404"
            else:
                raise

执行效率代码：

from timeit import Timer
 t1 = Timer('doGetLogByConfig()', 'from __main__ import doGetLogByConfig')
print t1.timeit(1)

结果：

httplib时间：
45.4764687239
urllib时间：
64.3462849881