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Namespace Quota Calculator

Work out namespace quota instantly with clear inputs, formula shown and shareable results.

About Namespace Quota Calculator

ResourceQuota caps the total requests a namespace may make, which is how a shared cluster stops one team consuming everything. Dividing available capacity evenly is the starting point; because teams rarely peak simultaneously, quotas are usually overcommitted to around 150 percent of a strict share, with monitoring on actual aggregate usage rather than allocated quota.

Formula

Quota allocation

available = cluster capacity x (1 - system reserve); per namespace = available / namespaces; overcommitted quota = per namespace x factor

Worked example

With the default values below, Namespace Quota Calculator returns CPU quota per namespace of 14.17. Change any input above and every figure here is recalculated in your browser.

Inputs used

Cluster allocatable CPUminimum 0.1 cores
200 cores
Cluster allocatable memoryminimum 0.1 GB
800 GB
Namespaces sharing the clusterminimum 1
12
Reserved for system namespacesaccepts 0–60 %
15 %

Results

CPU quota per namespace
14.17 cores
Memory quota per namespace
56.67 GB
Cores reserved for system namespaces
30.0 cores
Quota if overcommitted at 150 percent
21.25 cores

Step by step

  1. 1Values used
  2. 2Quota allocation
  3. 3CPU quota per namespace= 14.17 cores
  4. 4Memory quota per namespace= 56.67 GB
  5. 5Cores reserved for system namespaces= 30.0 cores
  6. 6Quota if overcommitted at 150 percent= 21.25 cores

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Should quotas apply to requests or limits?

Both, with different values. Quota on requests controls scheduling capacity; quota on limits controls the worst-case burst a namespace can create.

What happens when a namespace hits its quota?

New pods are rejected at admission with a clear error. That is far better than the alternative of one namespace starving the cluster.

Related Calculators

Namespace Quota Calculator | Calcrivo