/usr/share/gocode/src/github.com/opencontainers/runc/libcontainer/cgroups/fs/cpu_test.go is in golang-github-opencontainers-runc-dev 1.0.0~rc4+dfsg1-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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package fs
import (
"fmt"
"strconv"
"testing"
"github.com/opencontainers/runc/libcontainer/cgroups"
)
func TestCpuSetShares(t *testing.T) {
helper := NewCgroupTestUtil("cpu", t)
defer helper.cleanup()
const (
sharesBefore = 1024
sharesAfter = 512
)
helper.writeFileContents(map[string]string{
"cpu.shares": strconv.Itoa(sharesBefore),
})
helper.CgroupData.config.Resources.CpuShares = sharesAfter
cpu := &CpuGroup{}
if err := cpu.Set(helper.CgroupPath, helper.CgroupData.config); err != nil {
t.Fatal(err)
}
value, err := getCgroupParamUint(helper.CgroupPath, "cpu.shares")
if err != nil {
t.Fatalf("Failed to parse cpu.shares - %s", err)
}
if value != sharesAfter {
t.Fatal("Got the wrong value, set cpu.shares failed.")
}
}
func TestCpuSetBandWidth(t *testing.T) {
helper := NewCgroupTestUtil("cpu", t)
defer helper.cleanup()
const (
quotaBefore = 8000
quotaAfter = 5000
periodBefore = 10000
periodAfter = 7000
rtRuntimeBefore = 8000
rtRuntimeAfter = 5000
rtPeriodBefore = 10000
rtPeriodAfter = 7000
)
helper.writeFileContents(map[string]string{
"cpu.cfs_quota_us": strconv.Itoa(quotaBefore),
"cpu.cfs_period_us": strconv.Itoa(periodBefore),
"cpu.rt_runtime_us": strconv.Itoa(rtRuntimeBefore),
"cpu.rt_period_us": strconv.Itoa(rtPeriodBefore),
})
helper.CgroupData.config.Resources.CpuQuota = quotaAfter
helper.CgroupData.config.Resources.CpuPeriod = periodAfter
helper.CgroupData.config.Resources.CpuRtRuntime = rtRuntimeAfter
helper.CgroupData.config.Resources.CpuRtPeriod = rtPeriodAfter
cpu := &CpuGroup{}
if err := cpu.Set(helper.CgroupPath, helper.CgroupData.config); err != nil {
t.Fatal(err)
}
quota, err := getCgroupParamUint(helper.CgroupPath, "cpu.cfs_quota_us")
if err != nil {
t.Fatalf("Failed to parse cpu.cfs_quota_us - %s", err)
}
if quota != quotaAfter {
t.Fatal("Got the wrong value, set cpu.cfs_quota_us failed.")
}
period, err := getCgroupParamUint(helper.CgroupPath, "cpu.cfs_period_us")
if err != nil {
t.Fatalf("Failed to parse cpu.cfs_period_us - %s", err)
}
if period != periodAfter {
t.Fatal("Got the wrong value, set cpu.cfs_period_us failed.")
}
rtRuntime, err := getCgroupParamUint(helper.CgroupPath, "cpu.rt_runtime_us")
if err != nil {
t.Fatalf("Failed to parse cpu.rt_runtime_us - %s", err)
}
if rtRuntime != rtRuntimeAfter {
t.Fatal("Got the wrong value, set cpu.rt_runtime_us failed.")
}
rtPeriod, err := getCgroupParamUint(helper.CgroupPath, "cpu.rt_period_us")
if err != nil {
t.Fatalf("Failed to parse cpu.rt_period_us - %s", err)
}
if rtPeriod != rtPeriodAfter {
t.Fatal("Got the wrong value, set cpu.rt_period_us failed.")
}
}
func TestCpuStats(t *testing.T) {
helper := NewCgroupTestUtil("cpu", t)
defer helper.cleanup()
const (
nrPeriods = 2000
nrThrottled = 200
throttledTime = uint64(18446744073709551615)
)
cpuStatContent := fmt.Sprintf("nr_periods %d\n nr_throttled %d\n throttled_time %d\n",
nrPeriods, nrThrottled, throttledTime)
helper.writeFileContents(map[string]string{
"cpu.stat": cpuStatContent,
})
cpu := &CpuGroup{}
actualStats := *cgroups.NewStats()
err := cpu.GetStats(helper.CgroupPath, &actualStats)
if err != nil {
t.Fatal(err)
}
expectedStats := cgroups.ThrottlingData{
Periods: nrPeriods,
ThrottledPeriods: nrThrottled,
ThrottledTime: throttledTime}
expectThrottlingDataEquals(t, expectedStats, actualStats.CpuStats.ThrottlingData)
}
func TestNoCpuStatFile(t *testing.T) {
helper := NewCgroupTestUtil("cpu", t)
defer helper.cleanup()
cpu := &CpuGroup{}
actualStats := *cgroups.NewStats()
err := cpu.GetStats(helper.CgroupPath, &actualStats)
if err != nil {
t.Fatal("Expected not to fail, but did")
}
}
func TestInvalidCpuStat(t *testing.T) {
helper := NewCgroupTestUtil("cpu", t)
defer helper.cleanup()
cpuStatContent := `nr_periods 2000
nr_throttled 200
throttled_time fortytwo`
helper.writeFileContents(map[string]string{
"cpu.stat": cpuStatContent,
})
cpu := &CpuGroup{}
actualStats := *cgroups.NewStats()
err := cpu.GetStats(helper.CgroupPath, &actualStats)
if err == nil {
t.Fatal("Expected failed stat parsing.")
}
}
func TestCpuSetRtSchedAtApply(t *testing.T) {
helper := NewCgroupTestUtil("cpu", t)
defer helper.cleanup()
const (
rtRuntimeBefore = 0
rtRuntimeAfter = 5000
rtPeriodBefore = 0
rtPeriodAfter = 7000
)
helper.writeFileContents(map[string]string{
"cpu.rt_runtime_us": strconv.Itoa(rtRuntimeBefore),
"cpu.rt_period_us": strconv.Itoa(rtPeriodBefore),
})
helper.CgroupData.config.Resources.CpuRtRuntime = rtRuntimeAfter
helper.CgroupData.config.Resources.CpuRtPeriod = rtPeriodAfter
cpu := &CpuGroup{}
if err := cpu.ApplyDir(helper.CgroupPath, helper.CgroupData.config, 1234); err != nil {
t.Fatal(err)
}
rtRuntime, err := getCgroupParamUint(helper.CgroupPath, "cpu.rt_runtime_us")
if err != nil {
t.Fatalf("Failed to parse cpu.rt_runtime_us - %s", err)
}
if rtRuntime != rtRuntimeAfter {
t.Fatal("Got the wrong value, set cpu.rt_runtime_us failed.")
}
rtPeriod, err := getCgroupParamUint(helper.CgroupPath, "cpu.rt_period_us")
if err != nil {
t.Fatalf("Failed to parse cpu.rt_period_us - %s", err)
}
if rtPeriod != rtPeriodAfter {
t.Fatal("Got the wrong value, set cpu.rt_period_us failed.")
}
pid, err := getCgroupParamUint(helper.CgroupPath, "cgroup.procs")
if err != nil {
t.Fatalf("Failed to parse cgroup.procs - %s", err)
}
if pid != 1234 {
t.Fatal("Got the wrong value, set cgroup.procs failed.")
}
}
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