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Load Test Result Analysis

This is a discussion on Load Test Result Analysis within the LoadRunner forums, part of the Software Testing category; After running a successful scenario and collecting data on my system performance, now i can feel the main challenge is to analyze the result. As i am novice in this ...

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Old 06-30-2008
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Load Test Result Analysis

After running a successful scenario and collecting data on my system performance, now i can feel the main challenge is to analyze the result.
As i am novice in this field i am looking for good reference or any helpful links to learn actual Load Test result analysis techniques.

Any help would be appreciated.

Regards
Azmiri
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Old 07-05-2008
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Re: Load Test Result Analysis

I am not familiar with any written best practice. here are few tips that can help getting started

- Set your self performance objectives for transaction response time under specific load criteria. Example: TRX_01 response time should not exceed 4 seconds under 15 hits per second workload
- When you open analysis go over each of the transactions in the average transaction response time graph and check whether they breach the performacnce objective or not
- In case the response time is worse than the SLA
1. Correlate the transaction with other graphs (like windows resources) and try to find potential causes for the bottleneck. involove developers in this investigation
2. Overlay the response time graph with monitoring graphs and look for similar trend (this is what the correlate mechanism doing in an automatic manner)

- Check std deviation of the transactions if you see transactions that behave inconsistently try to identify what is the cause

- Look for transactions availability: (count of pass transactions/count of total transactions)x 100. Usually you expect consumer applications to have around 99.9% availability. Values lower doesn't neccessairly indicate an issue, but should be verified why it is lower. If you set performance targets around availability you can measure that easily later in Analysis
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Old 07-06-2008
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Re: Load Test Result Analysis

Hello shlomini

Thanks a lot for your valuable suggestions.Actually I was very much confused seeing all these result graphs after running the load test.Now I am working on preparing a summary report on the application performance and your suggestions are helping me a lot

Thanks again
Azmiri

**** Another issue: If anyone please help me providing any reference link to know the details about LoadRunner available monitors would be highly appreciated.
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