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  1. #1
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    definition of average response time - A question

    User (kemerd@yahoo.com.nospam) posted:

    Hello all,

    I am a bit confused about the meaning of average response time. In
    loadrunner analysis tool, there exist a graph that draws average
    response time against elapsed scenario time. I couldn't find any
    information in the product documentation about how that average is
    calculated.

    I think, they should have selected a timeframe as the basis of
    average, for example last 1 minute. My confusion point is that if I
    change the graph granularity, the numbers for exactly the same time
    point changes.

    Do you know exactly how the averages are calculated and the effect of
    granularity on the graph?

    thanks and best regards,
    kemal erdogan

  2. #2
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    Re: definition of average response time - A question

    User Stephanie (ssylve1445@mindspring.com.nospam) posted:

    the average response time is calculated over a given period of time for
    every x minutes. So if your graph is set to 3 minutes and your scenario runs
    for 12 minutes then the response time at 0, 3, 6, 9, and 12 minutes will be
    used to calculate the average response time. If you change it to 6 minutes,
    then the response time would be at 0, 6, 12 minutes.

    Stephanie
    Initiatives
    ----- Original Message -----
    From: <kemerd@yahoo.com>
    To: <LoadRunner@yahoogroups.com>
    Sent: Monday, September 24, 2001 5:45 AM
    Subject: [LoadRunner] definition of average response time - A question


  3. #3
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    Re: definition of average response time - A question

    User (kemerd@yahoo.com.nospam) posted:

    Hello Stephanie,

    Thanks for your reply to my question. But, I still some questions in
    my mind. The most important one is how that "given period" is
    determined (is that always a single minute, I don't think so) and how
    it it related to the granularity of the graph.

    regards,
    kemal



  4. #4
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    Re: definition of average response time - A question

    User LoadRunner (ssylve1445@mindspring.com.nospam) posted:

    the given period is determined by tracking the response time for the entire scenario execution. The granularity of the graph is based on time intervals. So say your scenario ran for 20 minutes and you set the granularity of the graph to 4 minutes, the graph would show you the average response time of your app at 0 minutes, 4 minutes, 8 minutes, 12 minutes, 16 minutes and 20 minutes in the execution of your scenario. The reason why the average response time changes when you change your granularity is because the average response time at 3 minutes into execution is different from at 4 or 5 minutes.

    Stephanie
    Initiatives
    LoadRunner@yahoogroups.com wrote:

    Thanks for your reply to my question. But, I still some questions in
    my mind. The most important one is how that "given period" is
    determined (is that always a single minute, I don't think so) and how
    it it related to the granularity of the graph.

    regards,
    kemal


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