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From sebb <seb...@gmail.com>
Subject Re: Coordinated Omission - detection and reporting ONLY
Date Mon, 21 Oct 2013 00:55:26 GMT
On 19 October 2013 16:47, Milamber <milamber@apache.org> wrote:
>
> Le 19/10/2013 01:26, sebb a ecrit :
>
>> [Trying again - please do not hijack this thread.]
>>
>> The Constant Throughput Timer (CTT) calculates the desired wait time,
>> and if this is less than zero - i.e. a sample should already have been
>> generated - it could trigger the creation of a failed Assertion (or
>> similar)
>> showing the time difference.
>>
>> Would this be sufficient to detect all CO occurrences?
>
>
> An option in CTT element which allow to mark as fail the(s) sampler(s) in
> the scope with a less than zero wait time seems a good point to inform
> users.
> The failed message can indicate the delay to help users to fix the scenario
> (i.e. add more VU and reduce frequency of CTT)

Or CTT would save the delay somewhere, and a new Assertion could be
created to report it.

That might work better if there are more places where delays could be detected.

> Milamber
>
>
>> If not, what other metric needs to be checked?
>>
>> Even if it is not the only possible cause, would it be useful as a
>> starting point?
>>
>> I am assuming that the CTT is the primary means of controlling the
>> sample request rate.
>> If there are other elements that are commonly used to control the
>> rate, please note them here.
>
>
>
>
>>
>> N.B: this thread is only for discussion of how to detect CO and how to
>> report it.
>>
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>>
>
>
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