[zeromq-dev] TCP zeromq performance review

Rohan Bedarkar r_bedarkar at yahoo.com
Mon Oct 22 23:18:44 CEST 2012


Well I could but I don't understand why individually sending messages, and waiting for each before sending the next, would make each individual message go out slower than if I send a million at once. Wait a min, is it possible I need to flush the send buffer when I send one message at a time?
 
--

Rohan Bedarkar
MS, Computer Science 

University of Chicago
rohanb at cs.uchicago.edu


 




________________________________
 From: Apostolis Xekoukoulotakis <xekoukou at gmail.com>
To: Rohan Bedarkar <r_bedarkar at yahoo.com>; ZeroMQ development list <zeromq-dev at lists.zeromq.org> 
Sent: Monday, October 22, 2012 4:14 PM
Subject: Re: [zeromq-dev] TCP zeromq performance review
 

Increase the number of msgs(1000000+) and retest. I got 12us.


2012/10/22 Rohan Bedarkar <r_bedarkar at yahoo.com>

Hi Chuck and Pieter
>
>
>I ran the ZMQ perf tests and also made changes to my own tests. Here's the outputs. My numbers match the perf tests. 
>
>
>Doesn't it seem a little too slow, 40 us for one way tcp message?
> 
>ZMQ Latency Test:
>---------------------------
>
>
>./remote_lat tcp://10.34.253.10:20000 10 10000
>message size: 10 [B]
>roundtrip count: 10000
>average latency: 43.045 [us]
>
>
>
>
>ZMQ Throughput Tests
>----------------------------------
>
>
>./local_thr tcp://eth0:20000 10 1000000
>
>
>Total time: 308 [ms]
>message size: 10 [B]
>message count: 1000000
>mean throughput: 3244646 [msg/s]
>mean throughput: 259.572 [Mb/s]
>
>
>My Throughput Test: 
>------------------------------
>
>
> Transport:                     ZMQ
>
> Messages recd:      1000000
> Total Time:                    721174 us   
> Throughput:                    166.395 Mbps 
> Avg per msg:                   0.721174 us                                                            
>
>
>My Latency Test:
>-------------------------
>
>
> Transport:                     ZMQ
>
> Messages sent:            10000
> Average / message:        40.2781 us   
> Max time:                      65 us   
> Min time:                      14 us   
>
>
> 
>
>--
>
>Rohan Bedarkar
>MS, Computer Science 
>
>University of Chicago
>rohanb at cs.uchicago.edu
>
>
>
> 
>
>
>
>
>
>
>________________________________
> From: Chuck Remes <lists at chuckremes.com>
>To: Rohan Bedarkar <r_bedarkar at yahoo.com>; ZeroMQ development list <zeromq-dev at lists.zeromq.org> 
>Sent: Friday, October 19, 2012 4:49 PM
>Subject: Re: [zeromq-dev] TCP zeromq performance review
> 
>
>
>Try it again with the example program local_thr and remote_thr and see if the results match using the same inputs.
>
>
>BTW, it looks reasonable to me. I have a similar machine (it's about 4 years old) and get around 55 usec latency as an average. Throughput is usually a bit higher especially for loopback.
>
>
>cr
>
>
>On Oct 19, 2012, at 4:28 PM, Rohan Bedarkar wrote:
>
>Hi Guys,
>>
>>
>>I've built a performance monitoring framework in C++ over OpenSuse Linux. Its a pretty solid machine with 16 cores. 
>>The application publishes TCP messages in one thread and subscribes to them in another. Each message is roughly 10 bytes. Here's the output.
>>
>>
>>Just want to run by these numbers.. What do you think?
>>
>>
>>
>>
>>Bound TCP server to port tcp://*:20000
>>Sending 1000000 msgs
>>
>>Received all messages
>>
>>Analyzing 1000000 msgs..
>>
>>---------------------------------------------------------
>>
>>             Performance Report                          
>>---------------------------------------------------------
>>                   
>> Transport:                     ZMQ
>> Messages sent:                1e+06
>> Total Time:                    1004.05 ms   
>> Average / message:          65.1254 us   
>> Max time:                      5347 us   
>> Min time:                      8.00014 us   
>> Throughput:                    119.515 Mbps 
>>                                                         
>>---------------------------------------------------------
>
>
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>


-- 


Sincerely yours, 
Apostolis Xekoukoulotakis

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