Gevent Pywsgi服务器-多处理？

Question

以下代码（取自此处：https://bitbucket.org/denis/gevent/src/6c710e8ae58b/examples/wsgiserver_ssl.py）实现了一个速度极快的支持greenlet的wsgi web服务器：

#!/usr/bin/python
"""Secure WSGI server example based on gevent.pywsgi"""

from gevent import pywsgi


def hello_world(env, start_response):
    if env['PATH_INFO'] == '/':
        start_response('200 OK', [('Content-Type', 'text/html')])
        return ["<b>hello world</b>"]
    else:
        start_response('404 Not Found', [('Content-Type', 'text/html')])
        return ['<h1>Not Found</h1>']

print 'Serving on https://127.0.0.1:8443'
server = pywsgi.WSGIServer(('0.0.0.0', 8443), hello_world, keyfile='server.key', certfile='server.crt')
# to start the server asynchronously, call server.start()
# we use blocking serve_forever() here because we have no other jobs
server.serve_forever()

然而，这只在一个核心上运行。您将如何修改它以利用多个进程？不是寻找一个涉及古尼科恩的答案，而是寻找更简单的答案。

提示

下面是一个使用gevent和多处理的代码示例，但是我仍然不知道如何使用WSGI（取自https://gist.github.com/1169975）：

import sys
from gevent import server
from gevent.baseserver import _tcp_listener
from gevent.monkey import patch_all; patch_all()
from multiprocessing import Process, current_process, cpu_count


def note(format, *args):
    sys.stderr.write('[%s]\t%s\n' % (current_process().name, format%args))

def echo(socket, address):
    print 'New connection from %s:%s' % address
    fileobj = socket.makefile()
    fileobj.write('Welcome to the echo server! Type quit to exit.\r\n')
    fileobj.write('In %s\r\n' % current_process().name)
    fileobj.flush()
    while True:
        line = fileobj.readline()
        if not line:
            print "client disconnected"
            break
        if line.strip().lower() == 'quit':
            print "client quit"
            break
        fileobj.write(current_process().name + '\t' + line)
        fileobj.flush()
        print "echoed", repr(line)

listener = _tcp_listener(('127.0.0.1', 8001))

def serve_forever(listener):
    note('starting server')
    server.StreamServer(listener, echo).serve_forever()

number_of_processes = 5
print 'Starting %s processes' % number_of_processes
for i in range(number_of_processes):
    Process(target=serve_forever, args=(listener,)).start()

serve_forever(listener)

Answer 1

还有一个实用程序可以与gevent一起解决这个问题，称为GIPC。

https://gehrcke.de/gipc/

其优点是可以从进程中来回传递对象并进行通信。只是一个想法。

Answer 2

为什么不用同样的方法做呢？ https://gist.github.com/1217855

import sys
from gevent import server
from gevent.baseserver import _tcp_listener
from gevent import pywsgi
from gevent.monkey import patch_all; patch_all()
from multiprocessing import Process, current_process, cpu_count

def hello_world(env, start_response):
    if env['PATH_INFO'] == '/':
        start_response('200 OK', [('Content-Type', 'text/html')])
        return ["<b>hello world</b>"]
    else:
        start_response('404 Not Found', [('Content-Type', 'text/html')])
        return ['<h1>Not Found</h1>']

listener = _tcp_listener(('127.0.0.1', 8001))

def serve_forever(listener):
    pywsgi.WSGIServer(listener, hello_world).serve_forever()

number_of_processes = 5
print 'Starting %s processes' % number_of_processes
for i in range(number_of_processes):
    Process(target=serve_forever, args=(listener,)).start()

serve_forever(listener)