Not sure if this'll be useful, but I made some latency testing code at the latest zmq gathering in brussels, I've tested it successfully to measure how much a micro instance on ec2 could take asynchronously when getting traffic from europe. It's in python though, but feel free to try it out: https://github.com/cncfanatics/latencyTest
On Fri, Jul 12, 2013 at 11:13 PM, ashwini ramamurthy < [email protected]> wrote: > Hi , > Thank you all for your inputs. Your right, I should do asynchronous tasks > and multi-cast to compare. That was my next step. I will be using PUB-PUB > and PUSH-PULL. > > > -Ashwini > > > On Fri, Jul 12, 2013 at 4:21 PM, Pieter Hintjens <[email protected]>wrote: > >> Right. If you care about performance you will always want an asynchronous >> model, and in this case ZeroMQ's batching will make a big impact. A latency >> critical request reply scenario is very uncommon. >> >> Pieter >> On Jul 12, 2013 9:00 PM, "Trevor Bernard" <[email protected]> >> wrote: >> >>> In your performance experiment ZeroMQ will always be slower than TCP. >>> There is a small overhead to using ZeroMQ but it's mitigated by other smart >>> things it does like smart batching to avoid redundant network stack >>> traversals. But if all you're doing is a synchronous PING/PONG, you lose >>> that speed benefit entirely and might as well just use TCP. >>> >>> ZeroMQ's value-add over TCP is stuff like API simplicity, >>> asynchronicity, message queuing/routing, multi-cast, atomic multi-part >>> messaging, etc. If speed is your concern, I would suggest redefining your >>> problem and try to model it asynchronously. >>> >>> One embodiment might be: >>> >>> Use PUSH/PULL to distribute the work and PUB/SUB to aggregate the >>> results. >>> >>> Warmest regards, >>> >>> Trev >>> >>> On Fri, Jul 12, 2013 at 3:19 PM, Diego Duclos <[email protected]>wrote: >>> >>>> Seeing as zeroMQ is most likely running on top of tcp in this case, it >>>> seems natural that for small messages the processing time of this extra >>>> layer of code is adding a noticeable processing time. >>>> You can find a really detailed write-up on performance at >>>> http://www.zeromq.org/results:0mq-tests-v03 >>>> >>>> >>>> On Fri, Jul 12, 2013 at 7:51 PM, ashwini ramamurthy < >>>> [email protected]> wrote: >>>> >>>>> Hi All, >>>>> >>>>> To compare the performance of zeromq and tcp I did the following >>>>> experiment >>>>> >>>>> >>>>> >>>>> *Experimental setup for zeromq * >>>>> >>>>> - android client(Motorola razr) which runs jeromq. >>>>> - java server(PC running Linux) which runs java binding of zeromq >>>>> - Using the REQUEST-REPLY messaging pattern >>>>> - Sending 100/1000 messages to the server and 100/1000 messages to >>>>> client (synchronous) >>>>> - The client sends a hello message and waits for a reply from the >>>>> server to send another message(ping-pong) >>>>> - The server waits for a message and replies with a hello for >>>>> every message sent >>>>> - Both the devices were connected through wifi >>>>> - *On an avg:For 100 messages the time taken was 937 msec* >>>>> - *On an avg:For 1000 messages the time taken was 8270 msec* >>>>> >>>>> *Experimental setup for TCP* >>>>> >>>>> - android client (Motorola razr) >>>>> - java server (PC running Linux) >>>>> - Using a REQ-REP pattern(ping-pong) >>>>> - Sending 100/1000 messages to the server and 100/1000 back to >>>>> client(synchronous) >>>>> - Same as above, client sends a hello message to server and waits >>>>> to receive a world message before sending the next message. >>>>> - Both the devices were connected through wifi >>>>> - *On an avg:For 100 messages the time taken was 504 msec* >>>>> - *On an avg:For 1000 messages the time taken was 5240 msec* >>>>> >>>>> Is this excepted? or am i missing something or doing something wrong? >>>>> >>>>> >>>>> >>>>> Thanks, >>>>> >>>>> Ashwini >>>>> >>>>> _______________________________________________ >>>>> 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 >>>> >>>> >>> >>> _______________________________________________ >>> 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 >> >> > > _______________________________________________ > zeromq-dev mailing list > [email protected] > http://lists.zeromq.org/mailman/listinfo/zeromq-dev > >
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