[ZODB-Dev] server stops handling requests - nowhere near 100% CPU or Memory used
Claudiu Saftoiu
csaftoiu at gmail.com
Fri Apr 20 14:06:40 UTC 2012
>
> Ah, so it seems that, as I leave the server running longer & longer,
> more & more threads are taken up with a `.recv()` call. I think one of
> my clients opens requests and does not read them/close them. Eventually
> all the threads are blocking in that fashion.
>
> I will fix my clients. But, is there a server-side fix to this (again,
> using Repoze.BFG)?
> Something to time out the connection after 60 seconds or so if nothing has
> happened?
>
Additional info: in particular the blocked threads' stack dumps look like
this:
Thread 140605868680960:
File "/usr/lib/python2.6/threading.py", line 504, in __bootstrap
self.__bootstrap_inner()
File "/usr/lib/python2.6/threading.py", line 532, in __bootstrap_inner
self.run()
File "/usr/lib/python2.6/threading.py", line 484, in run
self.__target(*self.__args, **self.__kwargs)
File "/home/tsa/env/lib/python2.6/site-packages/paste/httpserver.py",
line 878, in worker_thread_callback
runnable()
File "/home/tsa/env/lib/python2.6/site-packages/paste/httpserver.py",
line 1052, in <lambda>
lambda: self.process_request_in_thread(request, client_address))
File "/home/tsa/env/lib/python2.6/site-packages/paste/httpserver.py",
line 1068, in process_request_in_thread
self.finish_request(request, client_address)
File "/usr/lib/python2.6/SocketServer.py", line 322, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "/usr/lib/python2.6/SocketServer.py", line 617, in __init__
self.handle()
File "/home/tsa/env/lib/python2.6/site-packages/paste/httpserver.py",
line 442, in handle
BaseHTTPRequestHandler.handle(self)
File "/usr/lib/python2.6/BaseHTTPServer.py", line 329, in handle
self.handle_one_request()
File "/home/tsa/env/lib/python2.6/site-packages/paste/httpserver.py",
line 437, in handle_one_request
self.wsgi_execute()
File "/home/tsa/env/lib/python2.6/site-packages/paste/httpserver.py",
line 287, in wsgi_execute
self.wsgi_start_response)
File
"/home/tsa/env/lib/python2.6/site-packages/repoze/zodbconn/connector.py",
line 21, in __call__
result = self.next_app(environ, start_response)
File
"/home/tsa/env/lib/python2.6/site-packages/repoze/zodbconn/cachecleanup.py",
line 25, in __call__
return self.next_app(environ, start_response)
File
"/home/tsa/env/lib/python2.6/site-packages/repoze/retry/__init__.py", line
65, in __call__
chunk = original_wsgi_input.read(rest)
File "/home/tsa/env/lib/python2.6/site-packages/paste/httpserver.py",
line 474, in read
data = self.file.read(length)
File "/usr/lib/python2.6/socket.py", line 377, in read
data = self._sock.recv(left)
Was my assessment of the situation accurate?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.zope.org/pipermail/zodb-dev/attachments/20120420/e9456898/attachment.html>
More information about the ZODB-Dev
mailing list