⚖️ Little's Law

Simply put, here is the formula N = Z * (R + T) where

👨‍👩‍👧‍👦 Virtual Users

Virtual Users are the number of users that are simulated by the performance testing tool.

Transactions Per Second:
Average Response Time (seconds):
Think Time (seconds):

Number of virtual users required is 50.

Pacing is the time between two consecutive transactions.

Transactions Per Hour:
Number of Virtual Users:

Pacing time required is 10 seconds.

Unique data is required for each virtual user.

Number of virtual users:
Each Vuser duration (minutes):
Test duration (hours):

Total Test Data required is 900.

How many Load Generators do you need?

Total LG RAM (MB):
First VUser Memory (MB):
Each Additional VUser Memory (MB):
OS RAM - typically it would be around 700-750 MB:

Total Virtual Users that can run on that Load Generator is21.