Hi Joegen, PUB socket sends every message to *every* subscriber. Thus they should arrive at the destinations at approximately the same time.
Exact time of course depends on network latency between publisher and individual subscribers. Martin On 01/25/2012 10:41 AM, Joegen Baclor wrote: > Just in case someone finds time to look into my issue, I am attaching > the publisher code. Perhaps there is something I am doing wrong or > options i need to set to achieve a fairly-queued sending of events. > > On 01/24/2012 06:27 PM, Joegen Baclor wrote: >> Hi, >> >> We have an application the uses PUP/SUB sockets. One requirement that >> ZeroMQ gracefully meets is being able to reliably send events to all >> subscribers. However, there is a requirement in our application that >> relies on which client gets the event first. We were under the >> assumption that ZeroMQ randomizes the sending of events to the mutiple >> subscribers so that no one subscriber always gets a first hit. >> Unfortunately, this seems to be not the case. ZeroMq seems to follow a >> specific fix order. We have created 3 clients each incrementing a >> counter if it was the first one to get the publication. Take the >> output below (each iteration is 1500 events): >> >> Iteration 0 >> Client 1 processed 1496 events. >> Client 2 processed 0 events. >> Client 3 processed 4 events. >> >> Iteration 1 >> Client 1 processed 2309 events. >> Client 2 processed 647 events. >> Client 3 processed 44 events. >> >> Iteration 2 >> Client 1 processed 2992 events. >> Client 2 processed 1385 events. >> Client 3 processed 123 events. >> >> Iteration 3 >> Client 1 processed 3623 events. >> Client 2 processed 1951 events. >> Client 3 processed 426 events. >> >> Iteration 4 >> Client 1 processed 4207 events. >> Client 2 processed 2697 events. >> Client 3 processed 723 events. >> TestDriver::TestMultiplePop ... Ok >> >> Clearly, the order is predictable. client 1 gets the highest hit and >> client 3 gets the lowest hit. Is there a way so that we can spread >> this evenly across the subscribers? >> >> Joegen >> >> >> > > > > _______________________________________________ > zeromq-dev mailing list > [email protected] > http://lists.zeromq.org/mailman/listinfo/zeromq-dev _______________________________________________ zeromq-dev mailing list [email protected] http://lists.zeromq.org/mailman/listinfo/zeromq-dev
