Re: Recording asynchronous request/response times

Hi,

The sub protocol the web socket service provides do have unique req/res
message identifiers so I should be able to correlate the send and receive
timings based on that.

The web socket should also send response messages for connections that did
send the triggering request only, so that SHOULD be taken care of. If not
there will be bugs filed. :)

Also just noted that I did some spelling misstakes in the sequence diagrams
.. :).

Well, thanks for the info ! Greatly appreciated !

Cheers,
Niklas

On Tue, May 26, 2015 at 2:29 PM, Gary Mulder <[email protected]>
wrote:

> On 26 May 2015 at 12:34, nmodin <[email protected]> wrote:
>
>>
>> Now if we forget about reality (GC, number of machines etc), this seems
>> to be what I need to do if I read the docs correctly:
>>
>> Grinder WS load test <http://goo.gl/Tyri9R>
>>
>> Am I going in the right direction here or did I miss the target
>> completely ?
>>
>
> That looks about right. You may want to also put a sequence number in the
> payload to uniquely identify each message if you want to also confirm that
> every message is received.
>
> Also, you may want to carefully consider edge cases, i.e. when everyone is
> subscribed to the same message stream (one to many) as well as when
> everyone is subscribed to different messages streams (many to many). In the
> first case you may find that if the web socket server is poorly designed
> (e.g. it iterates serially through the subscriber list) the latency
> difference between the first client obtaining the message to the last
> client obtaining the same message is significant.
>
> Regards,
> Gary
>
>
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