Listeners - lt (latency ms) attribute

["Fleming, Scott A" <sc...@hp.com>]

Hello.

I'm trying to get a feel for how the latency (lt) attribute works within
jmeter.  How does this attribute relate to elapsed time (t) or are they
related at all?  And, should latency be a higher number than the elapsed
time total?

I guess the way I'm thinking, latency is the reaction time from first
byte received after message ack.  But not sure, so wanted to ask.

Thanks for any info.  I see some in the docs, but it really does not
cover or explain what the attribute really does.  Just that it provides
latency information in m.seconds, etc.

Have a good day.
-scott

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Re: Listeners - lt (latency ms) attribute

[sebb <se...@gmail.com>]

On 05/07/07, Fleming, Scott A <sc...@hp.com> wrote:
>
> Hello.
>
> I'm trying to get a feel for how the latency (lt) attribute works within
> jmeter.  How does this attribute relate to elapsed time (t) or are they
> related at all?

Latency <= Elapsed

> And, should latency be a higher number than the elapsed
> time total?

Never.

> I guess the way I'm thinking, latency is the reaction time from first
> byte received after message ack.  But not sure, so wanted to ask.

Time to first response. There will generally be more than 1 byte in
the response.

Only a few samplers implement latency (otherwise it will be zero), and
none currently stop the timer on receipt of the first byte.

> Thanks for any info.  I see some in the docs, but it really does not
> cover or explain what the attribute really does.  Just that it provides
> latency information in m.seconds, etc.
>
> Have a good day.
> -scott
>
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