Re: [OpenSTA-users] Reading the results

[Osoata, C. <Chr...@at...>]

Many thanks Dan, that is relly helpful.

Cheers Chris=20

-----Original Message-----
From: ope...@li...
[mailto:ope...@li...] On Behalf Of Dan
Downing
Sent: 21 February 2007 14:59
To: 'OpenSTA users discussion and support'
Subject: Re: [OpenSTA-users] Reading the results

Chris wrote:
>>Many thanks for your email, does the Active Users/Elapsed Time graph=20
>>show the response time for the total number of users? I currently have

>>3 different scripts, login, create new order and logout. I am running=20
>>the test for 50 simultaneous uses, will this graph show me the=20
>>response time for the 50 users for the 3 different scrips? Will it=20
>>also show the response time if I ramp up the users?
=20
Dan responded:
>>That graph shows response time (y-axis) vs. Active Users (x-axis) *for
whatever >>Timer you select*.  So yes, it is showing "average response
time"
at various >>concurrent active user intervals for all scripts that are
running.=20
>>Suggest you read more in the Help under Graphs.

Chris responded:
>Thanks for your response, so if the virtual users are simultaneous
(i.e.
>if I have 30 users all starting at the same time) the timer values vs
active users >graph does not give any information. Will the best graph
in this case be the "Active >users v Elapsed Time? Does this graph show
the response time for users
> throughput the test run?

If all users are simultaneous, then the Active Users/Elapsed Time graph
will show the average response time at 30 users (likely a straight line,
as there is no variation in Active Users over the duration of the test).

If you want to see how response time varies over load, suggest you ramp
your users at, say, 1 user every 10 seconds (6 users a minute).  Then
you should see response time at 6, 12, 18, 24, and 30 users over the
first 5 minutes of the test.

Note:  I have noticed that sometimes the graphs show "nothing" --
unclear why.  This is why I prefer exporting the Timers to Excel and
creating my own graphs.  To see how, go here:
http://tejasconsulting.com/blog/?p=3D88#comments

..Dan
 www.mentora.com
=20



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