libct/cg/sd: add defCPUQuotaPeriod
Un-inline defCPUQuotaPeriod constant. To be used by the next commit.
@@ -19,6 +19,13 @@ import (
"github.com/sirupsen/logrus"
)
+const (
+ // Default kernel value for cpu quota period is 100000 us (100 ms), same for v1 and v2.
+ // v1: https://www.kernel.org/doc/html/latest/scheduler/sched-bwc.html and
+ // v2: https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html
+ defCPUQuotaPeriod = uint64(100000)
+)
+
var (
connOnce sync.Once
connDbus *systemdDbus.Conn
@@ -410,10 +417,8 @@ func addCpuQuota(conn *systemdDbus.Conn, properties *[]systemdDbus.Property, quo
cpuQuotaPerSecUSec := uint64(math.MaxUint64)
if quota > 0 {
if period == 0 {
- // assume the default kernel value of 100000 us (100 ms), same for v1 and v2.
- // v1: https://www.kernel.org/doc/html/latest/scheduler/sched-bwc.html and
- // v2: https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html
- period = 100000
+ // assume the default
+ period = defCPUQuotaPeriod
}
// systemd converts CPUQuotaPerSecUSec (microseconds per CPU second) to CPUQuota
// (integer percentage of CPU) internally. This means that if a fractional percent of
