Hi, This has been fixed in 2.1.1. It is provoked by clients using the same identity.
-Pieter On 5 Mar 2011 00:17, "Baptiste Lepilleur" <baptiste.lepill...@gmail.com> wrote: > Hi, > I just started playing around with pyzmq examples, and I systematically run > into the following assertion on the server whenever I increase the number of > clients. > > --- > python server.py > Server 7712 > Assertion failed: nbytes == sizeof (command_t) (..\..\..\src\mailbox.cpp:78) > > This application has requested the Runtime to terminate it in an unusual > way. > Please contact the application's support team for more information. > --- > > This correspond to the following piece of code: > > // TODO: Implement SNDBUF auto-resizing as for POSIX platforms. > // In the mean time, the following code with assert if the send() > // call would block. > int nbytes = ::send (w, (char *)&cmd_, sizeof (command_t), 0); > wsa_assert (nbytes != SOCKET_ERROR); > zmq_assert (nbytes == sizeof (command_t)); > > It is not entirely clear to me if it is possible to avoid this situation, or > if it is just that the Windows support is incomplete... > > The example I'm using is the device example that I slightly modified by > removing the sleep on the server side, and printing the elapsed time only > every 10 000 messages on the client side and ported to python 3. > (modified server.py: > http://pastebin.com/VKjHY8Pb<http://pastebin.com/VKjHY8Pb>, > client.py: http://pastebin.com/C5J6eU1i <http://pastebin.com/C5J6eU1i>) > > Environment: > Windows XP SP3, VS 2008 SP1, zeromq 2.1.1, pyzmq 2.1.1, Python 3.2, Intel > Q9300 (4 cores) > > Here the test I did that show when the server crash occurs (don't take the > number seriously, this was not a proper bench environment, I just wanted > some rough figures): > > With anti-virus on (Avast 5.1.889): > 1 clients: 6.7s = ~1500 messages/s > 2 clients: 8.5s = ~2350 messages/s > 3 clients: 11.6 = ~2590 messages/s > 4 clients: server crash assertion on (..\..\..\src\mailbox.cpp:78) > > With anti-virus disabled (but installed Avast 5.1.889): > 1 clients: 4.5s = ~2220 messages/s > 2 clients: 5.1s = ~3920 messages/s > 3 clients: 6.0s = ~5000 messages/s > 4 clients: 7.7 = ~5200 messages/s > 5 clients: 9.1 = ~5500 messages/s > 6 clients: server crash assertion on (..\..\..\src\mailbox.cpp:78) > > Is the socket that would block on send an internal ZMQ socket? Can something > be done to avoid the issue? > > Baptiste.
_______________________________________________ zeromq-dev mailing list zeromq-dev@lists.zeromq.org http://lists.zeromq.org/mailman/listinfo/zeromq-dev
