Embedded ring buffer sizing calculator

Calculate queue occupancy trace and required capacity with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use queue occupancy trace and required capacity to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Events [time seconds,arriving elements,service capacity elements]
[[0,10,0],[1,5,8],[2,0,10]]
Reserve elements
2
Bytes per element
16
Queue occupancy trace
[[0,10],[1,7],[2,0]]
Required capacity (elements)
17
Required storage (bytes)
272

Try another scenario

Events [time seconds,arriving elements,service capacity elements]
[[0,10,0],[1,5,8],[2,0,10]]
Reserve elements
4
Bytes per element
16
Queue occupancy trace
[[0,10],[1,7],[2,0]]
Required capacity (elements)
19
Required storage (bytes)
304
Calculation method

Calculation method

Queue occupancy trace

At each unique ordered time, arrivals occur before service; peak measures pre-service occupancy.

Required capacity (elements)

Peak occupancy plus explicit reserve.

Required storage (bytes)

Capacity × bytes per element.

Symbols and units
a
Events [time seconds,arriving elements,service capacity elements]
b
Reserve elements
c
Bytes per element

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Arrival-service traces, burst limits, element size. Returns Peak occupancy and required bytes. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Reserve elements: minimum 0, maximum 1000000. Bytes per element: minimum 1, maximum 1000000.
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