[zeromq-dev] tcp vs zeromq

[ashwini ramamurthy]

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 <pieterh at gmail.com> 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" <trevor.bernard at gmail.com>
> 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 <diego.duclos at gmail.com>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 <
>>> ashwini.ram21 at gmail.com> 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
>>>>
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>>>>
>>>>
>>>
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