Error on executing the load test with 1500 users

Question

Hi All,

I am getting the following error while running a load test on two agent machines ( each with 128 GB RAM , 4 processors) for user load of 1500 users 

  Context parameter '$HIDDEN8.__VIEWSTATE' not found in test context  

The web performance test is passed without any error and even the load test with lesser user load (1000) is run successfully.

Please let me know how to resolve this issue. Need I create extraction rules for any step of the webtest?

Regards 

Alok Pathak

Answer 1

Hello Alok,

You mentioned that the web test is running perfectly fine and also, load test with user load of 1000 is running without this issue. Now, when you increase the user load to 1500, you start getting this error.

It is very common that a context parameter value is missing causing the above error, because the extraction rule in previous request was unable to extract the required value. This might have happened because the response was not proper! Have you tried to analyse the response of the request previous to the one that threw this error? The issue shall be there! And since it is hidden paramteter, tt won't give error at time of extraction.

See Web Test Authoring and Debugging Techniques for Visual Studio 2010.

-Tejas.

Answer 2

Thanks for the reply Tejas!
I have started working on this today.

Regards

Alok Pathak