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< a name = "building" > < strong > 7. Building a Database Test Plan< / strong > < / a > < a class = "sectionlink" href = "#building" title = "Link to here" > ¶ < / a > < / font >
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< / td > < / tr >
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< blockquote >
< p >
In this section, you will learn how to create a basic
< a href = "build-test-plan.html" >
Test Plan
< / a >
to test a database server.
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You will create fifty users that send 2 SQL requests to the database server.
Also, you will tell the users to run their tests 100 times. So, the total number
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of requests is (50 users) x (2 requests) x (repeat 100 times) = 10'000 JDBC requests.
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To construct the Test Plan, you will use the following elements:
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< a href = "test_plan.html#thread_group" >
Thread Group
< / a >
,
< a href = "../usermanual/component_reference.html#JDBC_Request" > JDBC Request< / a >
,
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< a href = "../usermanual/component_reference.html#Summary_Report" > Summary Report< / a >
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.
< / p >
< p >
< table border = "1" bgcolor = "#bbbb00" width = "50%" cellspacing = "0" cellpadding = "2" >
< tr > < td > This example uses the MySQL database driver.
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To use this driver, its containing .jar file (ex. mysql-connector-java-X.X.X-bin.jar) must be copied to the JMeter
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< b >
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./lib
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< / b >
directory (see
< a href = "get-started.html#classpath" >
JMeter's Classpath
< / a >
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for more details).
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< / td > < / tr >
< / table >
< / p >
< / blockquote >
< / p >
< / td > < / tr >
< tr > < td > < br > < / td > < / tr >
< / table >
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< font color = "#ffffff" face = "arial,helvetica,sanserif" >
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< a name = "adding_users" > < strong > 7.1 Adding Users< / strong > < / a > < a class = "sectionlink" href = "#adding_users" title = "Link to here" > ¶ < / a > < / font >
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< / td > < / tr >
< tr > < td >
< blockquote >
< p >
The first step you want to do with every JMeter Test Plan is to add a
< a href = "test_plan.html#thread_group" >
Thread Group
< / a >
element. The Thread Group
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tells JMeter the number of users you want to simulate, how often the users should
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send requests, and the how many requests they should send.
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< / p >
< p >
Go ahead and add the ThreadGroup element by first selecting the Test Plan,
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clicking your right mouse button to get the Add menu, and then select
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< b >
Add
< / b >
-->
< b >
ThreadGroup
< / b >
.
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< / p >
< p >
You should now see the Thread Group element under Test Plan. If you do not
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see the element, then "expand" the Test Plan tree by clicking on the
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Test Plan element.
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< / p >
< p >
Next, you need to modify the default properties. Select the Thread Group element
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in the tree, if you have not already selected it. You should now see the Thread
Group Control Panel in the right section of the JMeter window (see Figure 7.1
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below)
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< / p >
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< p > < table border = "0" cellspacing = "0" cellpadding = "0" > < tr > < td > < img src = "../images/screenshots/jdbctest/threadgroup1.png" / > < br >
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< font size = "-1" >
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Figure 7.1. Thread Group with Default Values
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< / font > < / td > < / tr > < / table > < / p >
< p >
Start by providing a more descriptive name for our Thread Group. In the name
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field, enter JDBC Users.
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< / p >
< p >
< table border = "1" bgcolor = "#bbbb00" width = "50%" cellspacing = "0" cellpadding = "2" >
< tr > < td > You will need a valid database, database table, and user-level access to that
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table. In the example shown here, the database is 'cloud' and the table name is
'vm_instance'.
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< / td > < / tr >
< / table >
< / p >
< p >
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Next, increase the number of users to 50.
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< / p >
< p >
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In the next field, the Ramp-Up Period, leave the the value of 10
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seconds. This property tells JMeter how long to delay between starting each
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user. For example, if you enter a Ramp-Up Period of 10 seconds, JMeter will
finish starting all of your users by the end of the 10 seconds. So, if we have
50 users and a 10 second Ramp-Up Period, then the delay between starting users
would be 200 milliseconds (10 seconds / 50 users = 0.2 user per second). If you set the
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value to 0, then JMeter will immediately start all of your users.
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< / p >
< p >
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Finally, enter a value of 100 in
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the Loop Count field. This property tells JMeter how many times to repeat your
test. To have JMeter repeatedly run your Test Plan, select the Forever
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checkbox.
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< / p >
< p >
< table border = "1" bgcolor = "#bbbb00" width = "50%" cellspacing = "0" cellpadding = "2" >
< tr > < td > In most applications, you have to manually accept
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changes you make in a Control Panel. However, in JMeter, the Control Panel
automatically accepts your changes as you make them. If you change the
name of an element, the tree will be updated with the new text after you
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leave the Control Panel (for example, when selecting another tree element).
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< / td > < / tr >
< / table >
< / p >
< p >
See Figure 7.2 for the completed JDBC Users Thread Group.
< / p >
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< p > < table border = "0" cellspacing = "0" cellpadding = "0" > < tr > < td > < img src = "../images/screenshots/jdbctest/threadgroup2.png" / > < br >
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< font size = "-1" >
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Figure 7.2. JDBC Users Thread Group
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< / font > < / td > < / tr > < / table > < / p >
< / blockquote >
< / p >
< / td > < / tr >
< tr > < td > < br > < / td > < / tr >
< / table >
< table border = "0" cellspacing = "0" cellpadding = "2" width = "100%" >
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< font color = "#ffffff" face = "arial,helvetica,sanserif" >
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< a name = "adding_requests" > < strong > 7.2 Adding JDBC Requests< / strong > < / a > < a class = "sectionlink" href = "#adding_requests" title = "Link to here" > ¶ < / a > < / font >
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< / td > < / tr >
< tr > < td >
< blockquote >
< p >
Now that we have defined our users, it is time to define the tasks that they
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will be performing. In this section, you will specify the JDBC requests to
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perform.
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< / p >
< p >
Begin by selecting the JDBC Users element. Click your right mouse button
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to get the w
< b >
Add
< / b >
menu, and then select
< b >
Add
< / b >
-->
< b >
Config Element
< / b >
-->
< b >
JDBC Connection Configuration
< / b >
.
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Then, select this new element to view its Control Panel (see Figure 7.3).
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< / p >
< p >
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Set up the following fields (these assume we will be using a MySQL database called 'cloud'):
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< / p >
< ul >
< li >
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Variable name (here: myDatabase) bound to pool. This needs to uniquely identify the configuration. It is used by the JDBC Sampler to identify the configuration to be used.
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< / li >
< li >
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Database URL: jdbc:mysql://ipOfTheServer:3306/cloud
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< / li >
< li >
JDBC Driver class: com.mysql.jdbc.Driver
< / li >
< li >
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Username: the username of database
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< / li >
< li >
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Password: password for the username
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< / li >
< / ul >
< p >
The other fields on the screen can be left as the defaults.
< / p >
< p >
JMeter creates a database connection pool with the configuration settings as specified in the Control Panel.
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The pool is referred to in JDBC Requests in the 'Variable Name' field.
Several different JDBC Configuration elements can be used, but they must have unique names.
Every JDBC Request must refer to a JDBC Configuration pool.
More than one JDBC Request can refer to the same pool.
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< / p >
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< p > < table border = "0" cellspacing = "0" cellpadding = "0" > < tr > < td > < img src = "../images/screenshots/jdbctest/jdbc-config.png" / > < br >
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< font size = "-1" >
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Figure 7.3. JDBC Configuration
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< / font > < / td > < / tr > < / table > < / p >
< p >
Selecting the JDBC Users element again. Click your right mouse button
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to get the
< b >
Add
< / b >
menu, and then select
< b >
Add
< / b >
-->
< b >
Sampler
< / b >
-->
< b >
JDBC Request
< / b >
.
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Then, select this new element to view its Control Panel (see Figure 7.4).
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< / p >
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< p > < table border = "0" cellspacing = "0" cellpadding = "0" > < tr > < td > < img src = "../images/screenshots/jdbctest/JDBCRequest.png" / > < br >
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< font size = "-1" >
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Figure 7.4. JDBC Request
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< / font > < / td > < / tr > < / table > < / p >
< p >
In our Test Plan, we will make two JDBC requests. The first one is for
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select all 'Running' VM instances, and the second is to select 'Expunging' VM instance (obviously you should
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change these to examples appropriate for your particular database). These
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are illustrated below.
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< / p >
< p >
< table border = "1" bgcolor = "#bbbb00" width = "50%" cellspacing = "0" cellpadding = "2" >
< tr > < td > JMeter sends requests in the order that you add them to the tree.
< / td > < / tr >
< / table >
< / p >
< p >
Start by editing the following properties (see Figure 7.5):
< ul >
< li >
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Change the Name to 'VM Running'.
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< / li >
< li >
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Enter the Pool Name: 'myDatabase' (same as in the configuration element)
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< / li >
< li >
Enter the SQL Query String field.
< / li >
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< li >
Enter the Parameter values field with 'Running' value.
< / li >
< li >
Enter the Parameter types with 'VARCHAR'.
< / li >
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< / ul >
< / p >
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< p > < table border = "0" cellspacing = "0" cellpadding = "0" > < tr > < td > < img src = "../images/screenshots/jdbctest/JDBCRequest2.png" / > < br >
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< font size = "-1" >
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Figure 7.5. JDBC Request for the first SQL request
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< / font > < / td > < / tr > < / table > < / p >
< p >
Next, add the second JDBC Request and edit the following properties (see
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Figure 7.6):
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< ul >
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< li >
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Change the Name to 'VM Expunging'.
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< / li >
< li >
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Change the value of Parameter values to 'Expunging'.
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< / li >
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< / ul >
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< / p >
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< p > < table border = "0" cellspacing = "0" cellpadding = "0" > < tr > < td > < img src = "../images/screenshots/jdbctest/JDBCRequest3.png" / > < br >
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< font size = "-1" >
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Figure 7.6. JDBC Request for the second request
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< / font > < / td > < / tr > < / table > < / p >
< / blockquote >
< / p >
< / td > < / tr >
< tr > < td > < br > < / td > < / tr >
< / table >
< table border = "0" cellspacing = "0" cellpadding = "2" width = "100%" >
< tr > < td bgcolor = "#525D76" >
< font color = "#ffffff" face = "arial,helvetica,sanserif" >
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< a name = "adding_listener" > < strong > 7.3 Adding a Listener to View/Store the Test Results< / strong > < / a > < a class = "sectionlink" href = "#adding_listener" title = "Link to here" > ¶ < / a > < / font >
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< / td > < / tr >
< tr > < td >
< blockquote >
< p >
The final element you need to add to your Test Plan is a
< a href = "component_reference.html#listeners" >
Listener
< / a >
. This element is
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responsible for storing all of the results of your JDBC requests in a file
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and presenting the results.
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< / p >
< p >
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Select the
< i >
JDBC Users
< / i >
element and add a
< a href = "../usermanual/component_reference.html#Summary_Report" > Summary Report< / a >
listener (
< b >
Add
< / b >
-->
< b >
Listener
< / b >
-->
< b >
Summary Report
< / b >
).
< / p >
< p >
Save the test plan, and run the test with the menu
< b >
Run
< / b >
-->
< b >
Start
< / b >
or
< b >
Ctrl+R
< / b >
< / p >
< p >
The listener shows the results.
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< / p >
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< p > < table border = "0" cellspacing = "0" cellpadding = "0" > < tr > < td > < img src = "../images/screenshots/jdbctest/jdbc-results.png" / > < br >
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< font size = "-1" >
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Figure 7.7. Graph results Listener
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< / font > < / td > < / tr > < / table > < / p >
< / blockquote >
< / p >
< / td > < / tr >
< tr > < td > < br > < / td > < / tr >
< / table >
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< br >
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< table >
< tr >
< td bgcolor = "#525D76" >
< div align = "right" > < a href = "index.html" > < font size = -1 color = "#ffffff" face = "arial,helvetica,sanserif" > Index< / font > < / a > < / div >
< / td >
< td bgcolor = "#525D76" >
< div align = "right" > < a href = "build-ftp-test-plan.html" > < font size = -1 color = "#ffffff" face = "arial,helvetica,sanserif" > Next< / font > < / a > < / div >
< / td >
< td bgcolor = "#525D76" >
< div align = "right" > < a href = "build-adv-web-test-plan.html" > < font size = -1 color = "#ffffff" face = "arial,helvetica,sanserif" > Prev< / font > < / a > < / div >
< / td >
< / tr >
< / table >
< / td >
< / tr >
< tr > < td colspan = "2" >
< hr noshade size = "1" / >
< / td > < / tr >
< tr > < td colspan = "2" >
< div align = "center" > < font color = "#525D76" size = "-1" > < em >
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Copyright © 1999-2013, Apache Software Foundation
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< / em > < / font > < / div >
< / td > < / tr >
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< tr > < td colspan = "2" >
< div align = "center" > < font color = "#525D76" size = "-1" >
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Apache, Apache JMeter, JMeter, the Apache feather, and the Apache JMeter logo are
trademarks of the Apache Software Foundation.
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< / font >
< / div >
< / td > < / tr >
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< / table >
< / body >
< / html >
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<!-- end the processing -->
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