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Queue worker count calculator (Little’s Law)
Size the workers behind a job queue from arrival rate, processing time and the utilization you want to keep
Result
Workers needed
33
- Jobs in progress on average
- 22.5
- Jobs per hour
- 1,800
- Jobs per day
- 43,200
How it is calculated
Little’s Law: jobs in progress = arrival rate × time per job. Workers needed = jobs in progress / target utilization, rounded up. Keeping utilization below 100% leaves room for bursts.
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