所以我在玩stackless python,编写一个非常简单的网络服务器来教自己使用微线程/tasklet 编程。但是现在我的问题是,当我ab -n 100000 -c 50 http://192.168.0.192/
在 apache bench 中运行类似(100k 个请求,50 个并发)之类的东西时,我得到类似 6k req/s 的东西,第二次运行它我得到 5.5k,第三次 5k,第四次,4.5k等一直到 100req/s 或其他东西。
不过,当我重新启动 python 脚本时,问题就消失了。
现在我的问题是为什么?我忘记删除小任务了吗?我已经检查了 stackless.getruncount() (由于某种原因,它似乎总是返回 1),所以它似乎不会有任何死的 tasklet 闲逛?我尝试在所有已完成的小任务上调用 .kill() ,但没有帮助。我就是想不通这个。
import socket
import select
import stackless
import time
class socket_wrapper(object):
def __init__(self, sock, sockets):
super(socket_wrapper, self).__init__()
self.sock = sock
self.fileno = sock.fileno
self.sockets_list = sockets
self.channel = stackless.channel()
self.writable = False
self.error = False
def remove(self):
self.sock.close()
self.sockets_list.remove(self)
def send(self, data):
self.sock.send(data)
def push(self, bytes):
self.channel.send(self.sock.recv(bytes))
def stackless_accept(accept, handler, recv_size=1024, timeout=0):
sockets = [accept]
while True:
read, write, error = select.select(sockets, sockets, sockets, timeout)
for sock in read:
if sock is accept:
# Accept socket and create wrapper
sock = socket_wrapper(sock.accept()[0], sockets)
# Create tasklett for this connection
tasklet = stackless.tasklet(handler)
tasklet.setup(sock)
# Store socket
sockets.append(sock)
else:
# Send data to handler
sock.push(recv_size)
# Tag all writable sockets
for sock in write:
if sock is not accept:
sock.writable = True
# Tag all faulty sockets
for sock in error:
if sock is not accept:
sock.error = True
else:
pass # should do something here if the main socket is faulty
timeout = 0 if socket else 1
stackless.schedule()
def simple_handler(tsock):
data = ""
while data[-4:] != "\r\n\r\n":
data += tsock.channel.receive()
while not tsock.writable and not tsock.error:
stackless.schedule()
if not tsock.error:
tsock.send("HTTP/1.1 200 OK\r\nContent-length: 8\r\n\r\nHi there")
tsock.remove()
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind(("192.168.0.192", 8000))
sock.listen(5)
stackless.tasklet(stackless_accept)(sock, simple_handler)
stackless.run()