[zeromq-dev] Newbie questions regarding performance

Kevin Sapper kevinsapper88 at gmail.com
Fri Mar 18 16:07:16 CET 2016


Hi Aaron,

without your actual code it's hard to tell. Please create a Github gist.
Thanks!

//Kevin

2016-03-18 11:49 GMT+01:00 Aaron Koolen-Bourke <aaronkoolen at gmail.com>:

> Hi all. I'm currently tasked with building a small test application to
> test 0MQ's performance for a possible replacement of our legacy messaging.
>
> The performance tests that come with libzmq obviously show great
> performance (8us latency on my box) but when I build a slightly different
> test of my own I'm getting comparatively terrible performance (2000us). Now
> I am sure this is my fault but I'm banging my head against a wall now and
> need some help.
>
> First, my setup - Windows platform, release mode builds using VS2015.
> Using CZMQ and 0MQ version 4.1.4.
>
> I built what I thought was a simple pipeline as suggested in the guide.
>
> PUSH->PULL->PULL (calculates entire time of message processing)
>
> The steps I do.
>
> Create producer zactor with a ZMQ_PUSH socket for "tasks". Then send
> 10000, 4 byte messages in a tight loop using zsock_bsend(socket, "4",
> count);
>
> Create another actor that is a ZMQ_PULL for receiving messages to indicate
> the task as been completely processed by a worker. I did this so I could
> measure the entire round trip.
>
> Create worker actor with a ZMQ_PULL to the producer. In tight loop I call
> zsock_brecv to receive those 4 bytes. When I do, I calculate the time since
> it was sent and post that as a message to the reply actor. That actor
> stores the value in a pre-allocated vector.
>
> So, to a newbie like myself it seems that I'm doing 2 sends and 2
> receives, so I would expect something in the ballpark of the lib tests.
>
> Hope that was clear.
>
> Thanks
> Aaron
>
>
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