CPU Time - cgroup - system

What it does#

This metric provider reads time spent in the CPU based on the cgroups stats file for all your cgroups. More information about cgroups can be found here.

Classname#

• CpuTimeCgroupSystemProvider

Metric Name#

• cpu_time_cgroup_system

Input Parameters#

• args
  • -i: interval in milliseconds

By default the measurement interval is 100 ms.

./metric-provider-binary -i 100 

Output#

This metric provider prints to Stdout a continuous stream of data. The format of the data is as follows:

TIMESTAMP READING

Where:

• TIMESTAMP: Unix timestamp, in microseconds
• READING:The time spent in the CPU, in microseconds, by all cgroup containers

Any errors are printed to Stderr.

How it works#

The provider assumes that you have cgroups v2 enabled on your system

The provider reads from the /sys/fs/cgroup/cpu.stat file.

In order to work in rootless cgroup delegation must be enabled here: /etc/systemd/system/user@.service.d/delegate.conf

Currently, <USER-ID> is set to the calling user.