Estimate how many simultaneous users an edge location can support before bandwidth or request throughput becomes the bottleneck. Enter usable link capacity, average traffic per active user, request rate, and node throughput to compare both constraints and identify the limiting resource.
The smaller result is the safe concurrent-user ceiling under the entered averages.
The main result is the lower of the bandwidth and request-throughput limits. The accompanying bottleneck label shows which resource reaches its ceiling first.
Real traffic is bursty. Keep operational headroom and validate the estimate with load tests before setting production limits.
With 800 Mbps, 2.5 Mbps per user, 1.2 requests per second per user, and 5,000 req/s capacity, bandwidth supports 320 users while request throughput supports about 4,167. The estimated capacity is therefore 320 concurrent users.
It uses the inputs, formula, units, and independence assumptions shown on this page. Change the inputs to match your own system or experiment.
Use representative averages for planning, preserve headroom where applicable, and test multiple plausible scenarios instead of relying on one point estimate.
No. The result is a planning estimate. Validate it with measured data, monitoring, load tests, or an experiment-design review as appropriate.
The calculator checks values required by the formula and displays an error instead of returning NaN or Infinity. Valid zero values remain available where they are meaningful.
Tools may use different statistical approximations, unit conventions, rounding rules, priors, confidence definitions, or operational headroom assumptions.
| Variable | Unit | Meaning |
|---|---|---|
| Usable bandwidth | Mbps | Bandwidth reserved for user traffic |
| Per-user traffic | Mbps/user | Average while actively connected |
| Request capacity | req/s | Measured sustainable edge throughput |