Hands-On Microservices with Kubernetes

Units for requests and limits

You can use the following suffixes for memory requests and limits: E, P, T, G, M, and K. You can also use the power of two suffixes (which are always a little larger), that is, Ei, Pi, Ti, Gi, Mi, and Ki. You can also just use integers, including the exponent notation for bytes.

The following are approximately the same: 257,988,979, 258e6, 258M, and 246Mi. CPU units are relative to the hosting environment, as follows:

• 1 AWS vCPU
• 1 GCP Core
• 1 Azure vCore
• 1 IBM vCPU
• 1 hyperthread on a bare-metal Intel processor with hyperthreading

You can request CPU in fractions of resolutions of 0.001. A more convenient method is to use milliCPU and just integers with the m suffix; for example, 100 m is 0.1 CPU.