Commit Graph

5 Commits

Author SHA1 Message Date
andriibeee
a3df0f890b lib/cgroup: support reading cpu/memory limits from systemd slices
cgroup v2 version supports slices ( aka path hierarchy) for resource limits. It's mostly supported by systemd
and container runtime build on top of it.

 This commit reads subpath for systemd slices and traverse it with reading minimal limit value.

Related docs:
https://docs.oracle.com/en/operating-systems/oracle-linux/9/systemd/SystemdMngCgroupsV2.html#SlicesServicesScopesHierarchy
https://www.freedesktop.org/software/systemd/man/latest/systemd.slice.html

Fixes https://github.com/VictoriaMetrics/VictoriaMetrics/issues/10635
2026-04-22 10:18:03 +02:00
Nikolay
dcadc65681 lib/cgroup: properly parse cpu limit
Previously, if `cpu.max` file has only `max` resource defined without
`period`, it was parsed incorrectly and silently drop error. While this
syntax is valid and actually used by some container runtimes. If period
is not defined, default value for it 100_000 must be used.

 This commit fixes parsing function by using default value for period.
In addition, it adds zero value check, which fixes possible panic if
period has 0 value.

Related issue:
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/8808
2025-04-25 11:48:05 +03:00
Nikolay
b50024812e adds cgroupsv2 support (#1283)
* adds cgroupv2 limits support
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1269

* small fix

* changes Atoi to ParseUint
2021-05-13 09:02:13 +03:00
Aliaksandr Valialkin
c5770600a2 lib/cgroup: follow-up after b9bf3cbe3e 2021-02-08 15:54:38 +02:00
Nikolay
b9bf3cbe3e refactored cgroups limits, (#1061)
adds tests, remove os.Exec
2021-02-08 15:46:22 +02:00