[Twisted-Python] How can I change max simultaneously connection in twisted

[孙绍轩]

Hello all

I just wrote a small code to holding many http requests until server's
status change. Everything is fine but when simultaneously connection up
to 1k+, the server code didn't response to new connection. I've set
ulimit -n's value to 65535 and the code using epollreactor mode. Are
there have some limitations? How can I configure to support more
connections?
BTW: I use Python 2.4.3 on CentOS 5 64-bit. follow is the code, Thanks
for you help!

from twisted.internet import epollreactor
epollreactor.install()

from twisted.internet import reactor, defer, threads
from twisted.web import server, resource, client
from twisted.python import log
from time import sleep
import sys

def checkstatus_wait(laststatus):
timeout = 25
while timeout > 0:
if int(laststatus) < status:
return True
else:
timeout -= 1
sleep(1)
return False

class Simple(resource.Resource):
isLeaf = True
def render_GET(self, request):
if "cmd" in request.args:
cmd = request.args['cmd'][0]
else:
cmd = ""

if cmp(cmd,"listen") == 0:
if "laststatus" in request.args:
last = request.args['laststatus'][0]
if int(last) < status:
return "ret=1\nerrstring=need update\nlaststatus=%d\n\n" % status
else:
d = threads.deferToThread(checkstatus_wait, last)
d.addCallback(self.testReturn, request)
return server.NOT_DONE_YET
else:
return "ret=1\nerrstring=need update\nlaststatus=%d\n\n" % status
elif cmp(cmd,"updatestatus") == 0:
if status < 1000000:
status += 1
else:
status = 0
#client.getPage('http://211.157.0.47/videochat/listen?cmd=updatestatus')
return "ret=1\nerrstring=success update\n\n"
else:
return "ret=-1\nerrstring=wrong cmd\n\n"

def testReturn(self, ret, request):
if ret:
request.write("ret=1\nerrstring=need update\nlaststatus=%d\n\n" % status)
else:
request.write("ret=0\nerrstring=no need update\n\n")
request.finish()

status = 0

log.startLogging(sys.stdout)
site = server.Site(Simple())

reactor.suggestThreadPoolSize(5000)
reactor.listenTCP(8080, site)
reactor.run()

-- 


孙绍轩 Yorgo Sun
 
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