20 * 99 = 1980
average response = 1884
diff = 96ms or
= 1884/20 = 94.2 - 99 = 4.8 ms/request
Rememeber, JMeter is calculating actual throughput - this includes time
spent on the jmeter side doing stuff. So, about 4.8 ms/request are
spent in context switching and other JMeter processing.
-Mike
On Thu, 2004-06-03 at 05:31, Ivan Rancati wrote:
> good morning,
>
> I have some beginner doubts on how exactly to read measurements for a
> simple Fast CGI website (or perhaps I don't understand how to use
> loops), and I did not find an exact answer on the documentation.
> My test plan is simple, I have a thread group with 20 threads, no ramp
> up time, loop 15 times
> then
> Interleave controller (ignore sub-controller blocks is selected)
> HTTP request 1
> HTTP request 2
> HTTP request 3
> HTTP request 4
> View Results in table
> View results in tree
> Aggregate report
>
> the 4 http requests go to FastCGI pages that have very similar execution
> times, and for each page I have a simple Response Assertion (same for
> all 4 pages)
>
> At the end of the run, View results in Table gives me an average of 1884
> ms for the 300 samples.
> Aggregate Report gives me a thoughput rate between 2.2/sec and 2.8/sec
> for each of the 4 http requests, and a total rate of 10.1/sec.
>
> Now, if 10.1 total requests are processed in a second, and I have 20
> threads, where does the average sample time of 1884 ms come from? I
> would expect something like
> 99 ms (since throughput is 10.1 requests in a second), or
> 1980, which is 99 ms times 20 (the number of threads)
>
> Also, occasionally, in View Results in Table, I see a sample time of 0
> ms, which looks odd.
>
> I am running JMeter 2.0.1 on German Windows 2000 (with latest service
> packs) and JVM 1.4.2_04. The server is a Linux box with Apache and Fast CGI
>
> Apologies if this is already covered in some faq or in the docs, I could
> not find it.
>
> thanks and best regards,
> Ivan Rancati
> QA engineer - SharpMind.de
>
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Michael Stover <[EMAIL PROTECTED]>
Apache Software Foundation
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