diff options
| author | Kevin Krakauer <krakauer@google.com> | 2021-02-02 12:45:25 -0800 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2021-02-02 12:47:23 -0800 |
| commit | 5f7bf3152652d36903f9659688321ae7c42995d0 (patch) | |
| tree | 374c56830303dc412894baa4edfd04bcda4cda74 /pkg/sentry | |
| parent | f884ea13b713143ff9978092ddb352c159346167 (diff) | |
Stub out basic `runsc events --stat` CPU functionality
Because we lack gVisor-internal cgroups, we take the CPU usage of the entire pod
and divide it proportionally according to sentry-internal usage stats.
This fixes `kubectl top pods`, which gets a pod's CPU usage by summing the usage
of its containers.
Addresses #172.
PiperOrigin-RevId: 355229833
Diffstat (limited to 'pkg/sentry')
| -rw-r--r-- | pkg/sentry/control/proc.go | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/pkg/sentry/control/proc.go b/pkg/sentry/control/proc.go index 1d88db12f..de7a0f3ab 100644 --- a/pkg/sentry/control/proc.go +++ b/pkg/sentry/control/proc.go @@ -404,3 +404,16 @@ func ttyName(tty *kernel.TTY) string { } return fmt.Sprintf("pts/%d", tty.Index) } + +// ContainerUsage retrieves per-container CPU usage. +func ContainerUsage(kr *kernel.Kernel) map[string]uint64 { + cusage := make(map[string]uint64) + for _, tg := range kr.TaskSet().Root.ThreadGroups() { + // We want each tg's usage including reaped children. + cid := tg.Leader().ContainerID() + stats := tg.CPUStats() + stats.Accumulate(tg.JoinedChildCPUStats()) + cusage[cid] += uint64(stats.UserTime.Nanoseconds()) + uint64(stats.SysTime.Nanoseconds()) + } + return cusage +} |