孙绍轩 写道:
> 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()
>
>
I've found out how to solve the problem!
I've changed python from 2.4 to 2.5, the problem has gone. It's a bug in
twisted?
--
孙绍轩 Yorgo Sun
China Distance Education Holdings Limited
18th Floor, XueYuan International Tower, No.1 ZhiChun Road, HaiDian District,
Beijing, China 100083
Phone: +8610-8231-9999 Ext 708
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