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Jmeter on Multiple Machines vs a Single Machine
I get two different totally different results, when running multiple JMeters instances on multiples machines compared to a single JMeter instance on a single machine. For example, If I'm looking to run 100 concurrent users. If I run all 100 threads from a single machine the results are much lower, if I were to run 50 threads on one machine and 50 on another. This is the exact same test plan as well. Both instances are run separate from each other, not as a master and server.
I suspect, it might have something to do with how the server is configured to accept request all coming from a single IP Address.
Can anyone one confirm this, and give some feedback on what results should I trust?
Re: Jmeter on Multiple Machines vs a Single Machine
Have a dev or sys admin look at the load on the server from the times when you ran your two tests to know which is more accurate.
Depending on how your test is structured, you could very easily have choked the incoming/outgoing connections on the single machine, as 100 threads is rather high for a desktop.