Documentation

Get the current process' effective CPU quota

See getEffectiveCPUQuota

Compute the "effective CPU quota" fr a cgroup, which may be smaller than the given cgroup's individual quota.

When a parent (or grandparent, etc) of this cgroup has a lower cpu quota, the lower quota is returned instead.

Read this specific cgroup's "cpu.max" file into a CPUQuota.

For example:

| cpu.max        | quota            |
| -------------- | ---------------- |
|  100000 100000 | CPUQuota (1 % 1) |
|  200000 100000 | CPUQuota (2 % 1) |
|   50000 100000 | CPUQuota (1 % 2) |
|     max 100000 | NoQuota          |

Returns NoQuota for the root cgroup, or when the cpu controller is not enabled in this cgroup.

Most often, you'll want to use getEffectiveCPUQuota instead.

A CPU quota is the ratio of CPU time our process can use relative to the scheduler period

For example:

| ratio            | description |
| ---------------- | ----------- |
|  100000 / 100000 |         (1) |
|  200000 / 100000 |         (2) |
|   50000 / 100000 |         (3) |
|     max / 100000 |         (4) |

1. : we can use up to a single CPU core
2. : we can use up to two CPU cores
3. : the scheduler will give us a single CPU core for up to 50% of the time
4. : we can use all available CPU resources (there is no quota)