Cpu unit eEinumkKMGTP meanings

General Discussions
1

When I create ResourceQuota ,it reported error:

Error from server (BadRequest): ResourceQuota in version "v1" cannot be handled as a ResourceQuota: v1.ResourceQuota.Spec: v1.ResourceQuotaSpec.Hard: unmarshalerDecoder: quantities must match the regular expression '^([+-]?[0-9.]+)([eEinumkKMGTP]*[-+]?[0-9]*)$', error found in #10 byte of ...|:"1000abc","memory":|..., bigger context ...|espace":"default"},"spec":{"hard":{"cpu":"1000abc","memory":"200Gi","pods":"10"},"scopeSelector":{"m|...

I found that cpu and memory have unit limits. I would like to ask you, what does “eEinumkKMGTP” mean?

Cluster information:

Kubernetes version:
Cloud being used: (put bare-metal if not on a public cloud)
Installation method:
Host OS:
CNI and version:
CRI and version:

You can format your yaml by highlighting it and pressing Ctrl-Shift-C, it will make your output easier to read.

2

It’s part of a regular expression it means it’ll match any one of those characters.

4

Sorry, I may not be able to express clearly, I know the meaning of this error, but what I am not clear about is what each letter in the string “eEinumkKMGTP” means, I only know the meaning of a few of them, such as ‘n’ for is nano-cores, m stands for milli-cores, what do the others mean?

5

E and e are scientific notation for decimal exponents (e.g. 5e3 = 5000)

m is milli (thousandths 10^-3)

K is kilo (10^3)
M is mega (10^6)
G is giga (10^9)
T is tera (10^12)
P is peta (10^15)

Ki is kilo (2^10)
Mi is mega (2^20)
Gi is giga (2^30)
Ti is tera (2^40)
Pi is peta (2^50)

6

Thanks a lot, and what do ‘i’ and ‘k’ stand for?

7

I know that ‘Ki’ and ‘Mi’ are used in memory, and the same is used in cpu?

8

The unit of cpu is whole cores, so things like milli make sense, but things like kilo or mega do not (unless you have a 1024 core machine!!)

The unit of memory is bytes, so things like mega and giga make sense, but milli does not.

The API field here is a map from string to “quantity” so both are syntactically able to use all scalars - you can ask for a mega-core or a milli-byte, but neither will do anything useful. :slight_smile: