I need some advise. I always worked on prim setup and had my JMeters in the same data center as application server to be tested. Now we got a cloud set up and I can ask for JMeters in different geographical locations in cloud to mimic real production behavior of the load. So is that what I should do? Will the response times of the transactions have network disturbances in them or it will be in fact like production? ...in on-prem testing when we have JMeters in the same data center as test application servers we totally eliminate network issues from the response times!!
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There are 2 different types of the performance metrics for the websites:
- Perceived System Performance
- Perceived User Experience
Perceived System Performance won't be impacted by geo-distributed JMeter setup, the backend doesn't really care where the requests are originating from and how much time it takes the request/response to travel over the wire back and forth. In fact the system will receive less load comparing to the same test scenario running in the same network.
Perceived User Experience will be different and you will experience larger response times as it takes some time for the packet to physically travel around the globe and pass through all routers/switches on its way towards the system under test and back.
In terms of JMeter Glossary
- Latency will be higher
- Delta between latency and elapsed time will be higher
Dmitri T
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