[zeromq-dev] Poor performance for DEALER <-> ROUTER - ROUTER <-> DEALER in hello_world scenario .

Panu Wetterstrand panu.wetterstrand at iki.fi
Fri May 23 17:06:42 CEST 2014


Yes. Then there is no unnecessary poll calls.
23.5.2014 17.48 kirjoitti "artemv zmq" <artemv.zmq at gmail.com>:

> Panu Wetterstrand ,
>
>
> Do u mean like this:
>
> ...
> for (; ; ) {
>   poller.poll(1000);
>   if (poller.pollin(0)) {
>     // block here and .recv() from socket until .recv() return null .
>   }
> }
> ...
>
>
> Is this is what  you are proposing?
>
>
> Thanks  for heads up /
>
>
>
>
> 2014-05-23 17:22 GMT+03:00 Panu Wetterstrand <panu.wetterstrand at iki.fi>:
>
>> Sorry. Event count relates to sockets so that is fine but try to read
>> until socket is empty and recv returns nil.
>> 23.5.2014 17.16 kirjoitti "Panu Wetterstrand" <panu.wetterstrand at iki.fi>:
>>
>>  You should handle all events before calling poll again. Poll returns
>>> event count. Only with phone so cant write example.
>>> 22.5.2014 21.21 kirjoitti "artemv zmq" <artemv.zmq at gmail.com>:
>>>
>>>> I'm following advice from a guide to come with
>>>> as-simple-solution-as-possible before moving further, and experiencing poor
>>>> performance on a very simple scenario.
>>>>
>>>> My test case is to check how ROUTER/DEALER constructions are working,
>>>> how far they scale.  My environment:
>>>>  windows_7_64bit/java7/4xCPU/8g/zmq-3.2.2/jzmq-3.0.0
>>>>
>>>> Got two java processes. One process(called Sender) hosts ROUTER-ROUTER
>>>> device   and  forever-loop DEALER  constantly sending "hello zmq world"
>>>>  message.  Second process(called Receiver) is hosting  single DEALER which
>>>> is sort of simple worker -- receives message and sends it back.
>>>>
>>>> The whole point is measure how much messages per sec I can get at this
>>>> very raw scenario. Here's java code:
>>>>
>>>> Sender -- http://pastebin.com/mM7dqvSw
>>>> Receiver -- http://pastebin.com/dS2SLA2G
>>>>
>>>>
>>>> The test result ~ 40K/sec  which is much-much less than I expected.
>>>> Because you can't have two java processes (both taking 50% cpu)  and
>>>> rendering 40K  at  "hello world"  scenario..
>>>>
>>>>
>>>>
>>>> Thanks in advance for a help.
>>>>
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>>>>
>>>>
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>
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