Hello all, I am using ZMQ 3.0.x on linux boxes with the PUB/SUB pattern. I have only one subscriber which is very slow. It needs 1 second every time a message is read. I have a HWM on the publisher side set to 10.
In my message, I have a counter which is incremented for each message. My messages are relatively small (150 bytes) I have a print of date each time the publisher sends a message (gettimeofday) I also have on the same host where the publisher is running a wireshark tool which captures network packets. With wireshark, I see that ZMQ drops messages number 11 to 39. I don't understand why. All the previous messages (number 1 to 10) have been sent on the network because I see them on wireshark The time reported by wireshark is coherent with the time printed by the publisher. Message 8 sent by publisher at xxx623,205547 Message 8 seen by wireshark at xxx623,205556 Message 9 sent by publisher at xxx623,205575 Message 9 seen by wireshark at xxx623,205584 Message 10 sent by publisher at xxx623,205603 Message 10 seen by wireshark at xxx623,205611 Message 11 sent by publisher at xxx623,205629 Message 12 sent by publisher at xxx623,205654 Message 13 sent by publisher at xxx623,205704 Message 14 sent by publisher at xxx623,205729 .... These messages are not seen by wireshark because I guess ZMQ took the decision to drop them. But why it took that decision? I don't think there are messages in the queue because I have seen them on the wire! Is there something I have missed? Any explanations are welcome Thank's in advance Emmanuel _______________________________________________ zeromq-dev mailing list [email protected] http://lists.zeromq.org/mailman/listinfo/zeromq-dev
