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Maximum concurrent VUs Messages in this topic - RSS

Unregistered User
Unregistered User
Posts: 343


25 days ago
Unregistered User
Unregistered User
Posts: 343

My test result:




Can I confirm my test has reached maximum 48 VUs concurrently?
Is this due to my test server limitation or my client’s resource limitation?
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George @StresStimulus
George @StresStimulus
Administrator
Posts: 302


24 days ago
George @StresStimulus
George @StresStimulus
Administrator
Posts: 302
Your result shows that:
  • 1500 unique VUs were instantiated at some points during the test (Max User Load)
  • During your whole test the maximum number of concurrent VUs was 48 (Max Concurrent User Load)

According to your load pattern, you create a new VU every 20 seconds, so VU #48 will be created 960 seconds (16 minutes) after the VU #1. If the average VU iteration time is less than 16 minutes then you will not reach more than 48 concurrent VU.
Because as new VUs are instantiated, existing VUs complete iterations and are terminated.

In order to increase concurrent VU you need to ramp up users faster. For example,
  • Decrease Step duration property (for example from 20 seconds to 10)
  • Increase Step VU increase property (for example from 1 to 5)

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