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Graphs for Individual Pages
Response Time
Response Time report represents values of
server response time.
Average and maximum response times are the most important characteristics of load testing.
They tell you how long a user waits for server response to his request.
You should ensure that users of your site/application get the response in acceptable time.
There are 3 important limits for response time values:
0.1
second. It is an ideal response time. Users feel that the system
is reacting instantaneously, and don't sense any interruption.
1.0
second. It is the highest acceptable response time. Users still
don't feel an interruption, though they will notice the delay. Response
times above 1 second interrupt user experience.
10
seconds. It is the limit after which response time becomes unacceptable.
Moreover, recent studies show that if response time exceeds 8 seconds,
user experience is interrupted very much and most users will leave
the site or system.
Normally, response times should be as fast as possible. The interval of
most comfortable response times is 0.1 - 1 second. Although people can
adapt to slower response times, they are generally dissatisfied with times
longer than 2 seconds.
Click on Response Time subfolder of Summary Report folder in Navigation Pane to view
the Response Time report.
You will see values of response time for each request. The whole test duration
interval is divided into the number of intervals equal to HTML
report dimension value. The program calculates values of response
time through these intervals and shows them in corresponding columns.
You can see the minimum (Min), average (Avg), average
calculated for 90% of all participated users (Avg90) and maximum
(Max) values of response time. If you watch this table during
test run, you will see how it is being filled in: one column after another
until the last column is filled in.
If response time in some column is equal to zero, it means that current request
wasn't executed during period specified in column header. You should
do one of the following to verify that you get correct results:
Decrease
HTML report dimension value in Log
and Report Settings
It is the number of columns displayed in current report and some other
tables of Summary Report and HTML Report. The number of
columns is the number of time intervals of the whole test duration interval.
If the tested server cannot execute an adequate number of requests during
time interval specified in column header, you should reduce the number
of columns. Increase
the Refreshing time in Log and Report Settings
It is time period (in seconds) after which the program refreshes statistics
of gathered data in generated graphs and reports. If Refreshing time
is too small, the tested server won't be able to execute an adequate
number of requests during this time. You should increase Refreshing
time value to get correct results.
Saving the Response Time report You can save the Response Time report as
HTML file in required location. For this, right-click on the displayed
report and select Save Current Report to HTML... option on the
context menu. In the displayed dialog, enter file name, select a location
and click Save. You will be able to view this report later, any
time you wish just from web browser. It is also a convenient way to
transfer test results to any interested person.
0.1
second. It is an ideal response time. Users feel that the system
is reacting instantaneously, and don't sense any interruption.
