Hi Chuck, On 28/11/2011 17:26, Chuck Remes wrote: > On Nov 28, 2011, at 10:19 AM, Emmanuel TAUREL wrote: > >> Hello all, >> >> I am using ZMQ 3.0.x on linux boxes with the PUB/SUB pattern. >> I have one publisher and two subscribers. I have a HWM set on the publisher >> to 50 and no HWM on the subscribers. >> When the HWM limit is reached on the publisher, following messages are >> dropped on the publisher side >> and both subscribers do not receive them. >> >> "man zmq_setsockopt" tell me this for the ZMQ_SNDHWM option: >> >> ------------------- >> >> The high water mark is a hard limit >> on the maximum number of outstanding messages 0MQ shall queue in memory >> for any single peer that the specified socket is communicating with. > The part that says "for any single peer" means that each peer has its own > SNDHWM enforcement. > >> ------------------- >> >> Do I have to understand that all peers are affected when the pub HWM is >> reached? > No. Only the peer that has reached the limit is affected. Other peers that > have not reached the limit should not see any message drops.
But this is not what I see on wireshark and on my terminal windows! When the HWM is reached, messages are dropped for all peers (at least for the 2 I have in my tests). I don't see them on the wire on both connections (connection1 with port1 for sub1 and connection2 with port2 for sub2) and my two applications using the subscribers complain. Therefore, I am a bit confused and I don't really know what should be the wanted behavior. Emmanuel _______________________________________________ zeromq-dev mailing list [email protected] http://lists.zeromq.org/mailman/listinfo/zeromq-dev
