meinheld 0.1

High performance asynchronous Python WSGI Web Server

What’s this

this is a python wsgi web server.

Thus this is yet an another asynchronous web server like fapws3, tornado.

And meinheld is a WSGI compliant web server.

Require

meinheld requires Python 2.x >= 2.5.

sorry meinheld supported linux only.

Installation

Install from pypi:

$ easy_install -ZU meinheld

Install from source:

$ python setup.py install

meinheld support gunicorn .

To install gunicorn:

$ easy_install -ZU gunicorn

Basic Usage

simple wsgi app:

from meinheld import server

def hello_world(environ, start_response):
    status = '200 OK'
    res = "Hello world!"
    response_headers = [('Content-type','text/plain'),('Content-Length',str(len(res)))]
    start_response(status, response_headers)
    return [res]

server.listen(("0.0.0.0", 8000))
server.run(hello_world)

with gunicorn. user worker class “meinheld.gmeinheld.MeinheldWorker”:

$ gunicorn --workers=2 --worker-class="meinheld.gmeinheld.MeinheldWorker" gunicorn_test:app

Performance

meinheld is used high performance http_parser.

(see http://github.com/ry/http-parser)

and useing high performance event library picoev.

(see http://developer.cybozu.co.jp/kazuho/2009/08/picoev-a-tiny-e.html)

simple benchmark

simple hello_world bench:

def hello_world(environ, start_response):
    status = '200 OK'
    res = "Hello world!"
    response_headers = [('Content-type','text/plain'),('Content-Length',str(len(res)))]
    start_response(status, response_headers)
    return [res]

use apach bench:

$ ab -c 100 -n 10000 http://127.0.0.1:8000/

spec

• CPU : Intel(R) Atom(TM) CPU N270 @ 1.60GHz

• Memoy : 1G

• OS: Ubuntu 10.04

server	Requests per second
meinheld 0.1	2927.62 [#/sec]
fapws3 0.6	1293.53 [#/sec]

sendfile

meinheld use sendfile(2), over wgsi.file_wrapper.