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If I can write a test script using one virtual user that will log onto my system as 100 different users, what does a virtual user really mean?
senthil_kumar84
- Feb 27th, 2007
Script and Data pool are the two mandatory things to simulate n number of virtual users. first we need to record/develop a script for our transaction. Then we have to create datapool according to...
hiran
- Nov 15th, 2006
hi,Also u can consider the data pool in the performance test.U can include the data form the data pool to smulate the same effect.tks hiran
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We are using LoadRunner v8.0. for testing the load of a .NET application. The problem is, 'recorded and the replay images are not exactly the same'. Though it seems to be an issue, the system (test results) is not showing any error. It just shows no errors. 1.Can anyone tell me what could be the reason for such a behaviour of the system?2.Can we use check points in load runner?
atdhdrolla
- Mar 15th, 2007
This is a very obvious problem with .Net application. Replay and Recorded snap shots doesn't match.Generally i do it as followingI try to download data during run time:File_Size = web_get_int_prop...
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What are the types of check points is available in LoadRunner? how to work on database check points?
crespoe2006
- Jun 1st, 2007
Hi ,We have two types of web check in LR1. Image check2. Text checkwhat is Image Check : VuGen allows you to add a user-defined check that searches for an image on a Web page during the run.What ...
sudhakar2068
- Aug 16th, 2006
The check point available in the load runner are start time and end time and rendzervous point.sudhakar kolla09819859346
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Can we use the function lr_load_dll in a web vuser script? if we can , how? please give an example
aparnay
- Jun 6th, 2007
lr_load_dll is used to load functions defined in an external DLL.If you want the DLL function to be loaded locally use this function.So this function is available only to that particular Vuser. The ma...
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When the script is running we find some values that may be need to correlated? is it possible to do manual correlation for that values?
moresunil8
- Jul 11th, 2007
Yes its possible to corelate at the time of runtime. We can check it in run time settings.
crespoe2006
- Jun 1st, 2007
Hi,yes it is possible, but before doing manual correlation, scan the script for correlation using LR option in VUGen.If that value is not correlated using correlation studio then proceed with manual correlation.cheers
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What is throughput and how we can measure it during load testing?
sandy05
- Jul 25th, 2007
Hi,Throughput is nothing but the amount of data return by the server(bytessec) for the request we sent.It is includede in the client side statistics... so while executing the load test Thorughput graph will gerenate...Cheerssandy
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What criteria would you use to select Web transactions for load testing?
Anshoo_Arora
- Nov 7th, 2007
You can use a transaction (lr_start_transaction in LR) everytime the client submits a request to the server. As for what criteria is to be used, you can use it whenever you want to test for server response times.
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What are the most common dynamic values in VUGEN script to correlate etc:sessionID...
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lr_endtranscation("transcationname",lr_pass)lr_endtranscation("transcationname",lr_fail)">
What is the difference between lr_endtranscation("transcationname",lr_auto)lr_endtranscation("transcationname",lr_pass)lr_endtranscation("transcationname",lr_fail)
Anshoo_Arora
- Nov 22nd, 2007
LR_AUTO: It will return the actual status as detected by the tool.LR_PASS: No matter what status you get, this transaction status will return a PASS code.LR_FAIL: Likewise, this will return a FAIL code.
Raghunath
- Jan 2nd, 2007
U have to give the state of the transaction. In the given case the first one is right as it has a state of transaction. Where in the second case its not given. Every lr transaction u have to give the end statelr_auto is the state of transaction given in first case
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How to test load (performance) when web application is running on sever?
sandy05
- Jul 25th, 2007
Hi guys,If web application is running on the server we can test the load test as follows...Based on the criteria (data load) given by the customer we will sent the request to the server... before that...
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What is performance baseline testing and at what stage of testing it is used
reachsanthan
- Apr 11th, 2008
Testing the application with minimum(we use 10% of total load) no.of users to establish the performance testing goals for any new application or enhanced applications.
Anshoo_Arora
- Nov 7th, 2007
This depends from company to company actually and especially the testers. However, it should be done in the initial load-testing stages and may/may not be used as a benchmark.- Anshoo Arora
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How can data caching have a negative effect on load testing results?
kanthrajgowda
- May 23rd, 2008
Data cacheing do not have a negative effect on load testing results. In iother words the more data is cached on to your primary memory, it boosts the performance.To eliminate the effect of server side cacheing, parameterise the required data wherever necessary.Regards,Kanthraj.9212264980,.
Anshoo_Arora
- Nov 8th, 2007
Have cookies/cached data from the respective server on your machine can decrease transaction response time. This is not good practice when load testing an application. Thus, try to parameterize y...
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What criteria would you use to select Web transactions for load testing?
kanthrajgowda
- May 23rd, 2008
Good idea is to get the business profile from the business analyst. Business profile desribes what are the transactions required and number of users doing the particular transaction over a period of time.Thanks, Kanthraj.9212264980
Tanmay Bhide
- Sep 25th, 2007
The criteria can be of two types: Functional based or Technical based.Functional based criteria implies 1. Business priority2. Volume of transactions /day, /hourTechnical based criteria implies1. Complexity of Code2. Search based screens3. Read/Write scenarios
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Consider A scenario where CPU is exhausted, physical RAM has shown release, but no return, and is almost depleted. At this point, what could potentially be wrong with the application.
kanthrajgowda
- May 23rd, 2008
As replied above it could be a case of memory leak. You may confirm memory leak be looking at your app server logs for errors like OurOfMemoryexceptions. Other possible reason could be you RAM may not have neough space..try increasing the RAM size...
ranganath_m
- Sep 25th, 2007
As you have mentioned that, RAM has shown relaese and is almost depleted, i suspect there is memory leak in the application. Because of that only CPU exhausted( i mean Application crashed). So, There ...
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What is the difference between the concurrent users and simultaneous user with respect to load runner.
kanthrajgowda
- May 23rd, 2008
There is a big difference between simultaneous and concurrent users in load testing world. Simultaneous users: Lets say that users are logging into application, send a mail and logout. In this process...
Ashish Gharde
- Mar 1st, 2007
Simultaneous users have active connections to the same Web site, whereas concurrent users hit the site at exactly the same moment. Concurrent access is likely to occur at infrequent intervals. Your si...
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Load Testing Interview Questions
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