Load Test Could not write to file on controller machine error 112

by Xavier Dilip Kumar 29. April 2016 06:37

Exception: 

Solution:

This error may occur when the Test Controller and Agents runs out disk space. Try to clean up the disk to gain free space or add extra space to the drive. 

Tags: , , ,

TFS | Web Performance & Load Tests | TFS 2012 | TFS 2013 | TFS 2015

How to add IE 11 version to the browser Type to configure a Load Test in Visual Studio IDE?

by Xavier Dilip Kumar 30. January 2015 07:02

Solution:

1. Open Notepad.

2. Edit the file with the following details

 <Browser Name="Internet Explorer 11.0" MaxConnections="6">
  <Headers>
    <Header Name="User-Agent" Value="Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko" />
    <Header Name="Accept" Value="*/*" />
    <Header Name="Accept-Language" Value="{{$IEAcceptLanguage}}" />
    <Header Name="Accept-Encoding" Value="GZIP" />
  </Headers>
</Browser>

3. Save the file as "IE11.browser" under "C:\Program Files (x86)\Microsoft Visual Studio <Version>\Common7\IDE\Templates\LoadTest\Browsers"

Tags:

Web Performance & Load Tests | Visual Studio 2010 | Visual Studio 2012 | Visual Studio 2013

How to upgrade Visual Studio Load Test Rig from 2010 to 2012?

by Xavier Dilip Kumar 20. January 2015 17:26

Explanation:

Pre-Upgrade Tasks

Make a note of the members in the following Test controller windows groups

  • TeamAgentService,TeamTestControllerAdmins and TeamTestControllerUser

Make a note of the members and permissions in "LoadTest2010" DB

Uninstall 2010 Test Agents.

Uninstall 2010 Test Controller.

Installing 2012 Test controller 

Install Test controller with the default option.

Configure Test Controller as below

 

Create load test result repository by execution the loadtestresultsrepository.sql script at <VS Install Dir>\Common7\IDE

or 

1) Open a cmd prompt

2) Change into the following directory: <VS Install Dir>\Common7\IDE

3) Run the following command: sqlcmd -S <DB Server Name> -i loadtestresultsrepository.sql

Installing 2012 Test Agents

Install Test Agents with the default option.

Configure Test  Agents as below

 

Post-Upgrade Tasks

Add the users to the following windows groups identified in 2010 load test rig.

  • TeamAgentService,TeamTestControllerAdmins and TeamTestControllerUser

Add the users and permission\login access to "LoadTest2010" DB identified in 2010 load test rig DB

Tags:

Web Performance & Load Tests

The load test results repository was created with a previous version and it is not compatible

by Xavier Dilip Kumar 20. October 2014 18:12

Exception:

Explanation:

Create load test result repository by execution the loadtestresultsrepository.sql script at <VS ultimate Install Dir>\Common7\IDE

or 

1) Open a cmd prompt

2) Change into the following directory: <VS ultimate Install Dir>\Common7\IDE

3) Run the following command: sqlcmd -S <DB Server Name> -i loadtestresultsrepository.sql

 

Tags:

Web Performance & Load Tests

Load Test: The test has not started yet

by Xavier Dilip Kumar 4. February 2014 14:06

Exception:

"The test has not started yet"

Explanation:

The test run result window just lists the name of the machine from which it ran, but it never opens the results and also Test run state remains pending. After I double click on the machine test item it just says "The Test has not started yet". Not able to view the result online during load test execution time. 

 

Solution:

The VS 2010 client version which I used to execute the load was SP1. But the test rig environment version was only VS 2010 RTM. 

1. Installed the SP1 on test controller and agents

2. Reconfigured the agents to controller again.

Tags:

TFS | TFS 2010 | Web Performance & Load Tests

(QTAgent32.exe, PID 6240, Thread 16) WebLoadTestAdapter: Shutting down test due to exception: The RunDuration for the active Load Test Run Settings is 0 seconds; it must be at least 1 second

by Xavier Dilip Kumar 1. June 2013 13:24

Solution

To change run settings

1.Open a load test.
2.Expand the Run Settings folder.
3.Choose a Run Settings node.
4.On the View menu, choose Properties Window.The Properties Window is displayed and the properties for the selected run setting are displayed.
5.Use the Properties Window to change the run settings. For example, change the run duration to 00:05:00 to run your test for five minutes.
6.When you are finished changing properties, save your load test. On the File menu, choose Save.

Reference: http://msdn.microsoft.com/en-us/library/ff406976.aspx

Tags:

Web Performance & Load Tests

LoadTestAgentResultsLateException - Results from agent Test Agent were not received in time to be included in the overall results for a sampling interval

by Xavier Dilip Kumar 31. May 2013 13:10

Exception

Results from agent 'Test Agent' were not received in time to be included in the overall results for a sampling interval. To avoid this error, increase the sample rate, or decrease the load on this agent

Explanation

Sample Rate property for the load test run setting based on the length of your load test.

Solution

To specify performance counter sampling rate in a run setting

1.Open a load test.The Load Test Editor appears. The load test tree is displayed.
2.In the load test tree, in the Run Settings folder, choose the run setting that you want to specify the sample rate for.
3.On the View menu, select Properties Window.The load run setting's categories and properties are displayed in the Properties window.
4.In the Sample Rate property, enter a time value that indicates the frequency at which the load test will collect performance counter data.
5.After you have finished changing the property, choose Save on the File menu. You can then run your load test using the new Sample Rate value.

Load Test Duration - Recommended Sample Rate
< 1 Hour - 5 seconds
1 - 8 Hours - 15 seconds
8 - 24 Hours - 30 seconds
> 24 Hours - 60 seconds

Reference - http://msdn.microsoft.com/en-us/library/ff423846.aspx

Tags:

Web Performance & Load Tests

Test Controllers TestRunStorage has filled up hard drive

by Xavier Dilip Kumar 31. May 2013 11:54

Explanation

When a load test is executed from the local machine the assemblies required to run the test are copied to the controller. The files are copied to a directory on the controller in the following location Drive:\Users\[USER]\AppData\Local\VSEQT\QTController.The Test results are copied to a directory on the controller in the following location Drive:\Users\<Account>\AppData\Local\VSEQT\QTController\TestRunStorage.
Each deployment and TestRunStorage will have a further directory named with a unique GUID where the files are copied.

For example

Deployment folder location: C:\Users\[USER ACCOUNT]\AppData\Local\VSEQT\QTController\[GUID]
TestRunStorage folder location : C:\Users\[USER ACCOUNT]\AppData\Local\VSEQT\QTController\TestRunStorage\[GUID]

Workaround

Delete the folders under C:\Users\[USER ACCOUNT]\AppData\Local\VSEQT\QTController\. or a scheduled task to delete the folders periodically

Tags:

Web Performance & Load Tests

Error occured running test. Exception of type "System.OutOfMemoryException" was thrown.

by Xavier Dilip Kumar 15. May 2013 13:38

Solution

 

Tags:

Web Performance & Load Tests

Could not access the load test results repository: The load test results repository is out of space. Allocate more space to the repository (if possible), or delete results of the older load test runs.

by Xavier Dilip Kumar 8. May 2013 09:46

Problem

The load test rig database was configured on SQL Server 2008 express edition which can hold maximum database size of 4 gb

Workaround

Note: Always test the blog script on your test environment before executing on production environment

This problem can be overcame by removing historical results

-- Start Script

-- This script deletes all load test run older than two weeks
-- To change the timeframe, change the number of days from 14 to the desired number
 
USE LoadTest
DECLARE @LoadTestRunId int
DECLARE OldLoadTestsCursor CURSOR FOR
    SELECT LoadTestRunId FROM LoadTestRun WHERE datediff(dd, StartTime, getdate()) > 14
 
OPEN OldLoadTestsCursor
FETCH NEXT FROM OldLoadTestsCursor INTO @LoadTestRunId
 
WHILE @@FETCH_STATUS = 0
BEGIN
    EXEC Prc_DeleteLoadTestRun @LoadTestRunId
    FETCH NEXT FROM OldLoadTestsCursor INTO @LoadTestRunId
END
 
CLOSE OldLoadTestsCursor
DEALLOCATE OldLoadTestsCursor

-- End Script

Script Reference :  http://blogs.msdn.com/b/billbar/archive/2006/02/09/528900.aspx

Solution

Configure the rig to other editions of SQL server.


 

Tags:

Web Performance & Load Tests

About the author

My name is Xavier Dilip Kumar Jayaraj and I am a Software Configuration Management Engineer with a background in application development, Build & packaging using Install Shield.

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Disclaimer

The information provided here is based on my expreriences, troubleshooting and online/offline findings. It can be used as is on your own risk without any warranties and I impose no rights.

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