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|
package fs
import (
"fmt"
"strconv"
"testing"
"github.com/opencontainers/cgroups"
"github.com/opencontainers/cgroups/fscommon"
)
func TestCpuSetShares(t *testing.T) {
path := tempDir(t, "cpu")
const (
sharesBefore = 1024
sharesAfter = 512
)
writeFileContents(t, path, map[string]string{
"cpu.shares": strconv.Itoa(sharesBefore),
})
r := &cgroups.Resources{
CpuShares: sharesAfter,
}
cpu := &CpuGroup{}
if err := cpu.Set(path, r); err != nil {
t.Fatal(err)
}
value, err := fscommon.GetCgroupParamUint(path, "cpu.shares")
if err != nil {
t.Fatal(err)
}
if value != sharesAfter {
t.Fatal("Got the wrong value, set cpu.shares failed.")
}
}
func TestCpuSetBandWidth(t *testing.T) {
path := tempDir(t, "cpu")
const (
quotaBefore = 8000
quotaAfter = 5000
burstBefore = 2000
periodBefore = 10000
periodAfter = 7000
rtRuntimeBefore = 8000
rtRuntimeAfter = 5000
rtPeriodBefore = 10000
rtPeriodAfter = 7000
)
burstAfter := uint64(1000)
writeFileContents(t, path, map[string]string{
"cpu.cfs_quota_us": strconv.Itoa(quotaBefore),
"cpu.cfs_burst_us": strconv.Itoa(burstBefore),
"cpu.cfs_period_us": strconv.Itoa(periodBefore),
"cpu.rt_runtime_us": strconv.Itoa(rtRuntimeBefore),
"cpu.rt_period_us": strconv.Itoa(rtPeriodBefore),
})
r := &cgroups.Resources{
CpuQuota: quotaAfter,
CpuBurst: &burstAfter,
CpuPeriod: periodAfter,
CpuRtRuntime: rtRuntimeAfter,
CpuRtPeriod: rtPeriodAfter,
}
cpu := &CpuGroup{}
if err := cpu.Set(path, r); err != nil {
t.Fatal(err)
}
quota, err := fscommon.GetCgroupParamUint(path, "cpu.cfs_quota_us")
if err != nil {
t.Fatal(err)
}
if quota != quotaAfter {
t.Fatal("Got the wrong value, set cpu.cfs_quota_us failed.")
}
burst, err := fscommon.GetCgroupParamUint(path, "cpu.cfs_burst_us")
if err != nil {
t.Fatal(err)
}
if burst != burstAfter {
t.Fatal("Got the wrong value, set cpu.cfs_burst_us failed.")
}
period, err := fscommon.GetCgroupParamUint(path, "cpu.cfs_period_us")
if err != nil {
t.Fatal(err)
}
if period != periodAfter {
t.Fatal("Got the wrong value, set cpu.cfs_period_us failed.")
}
rtRuntime, err := fscommon.GetCgroupParamUint(path, "cpu.rt_runtime_us")
if err != nil {
t.Fatal(err)
}
if rtRuntime != rtRuntimeAfter {
t.Fatal("Got the wrong value, set cpu.rt_runtime_us failed.")
}
rtPeriod, err := fscommon.GetCgroupParamUint(path, "cpu.rt_period_us")
if err != nil {
t.Fatal(err)
}
if rtPeriod != rtPeriodAfter {
t.Fatal("Got the wrong value, set cpu.rt_period_us failed.")
}
}
func TestCpuStats(t *testing.T) {
path := tempDir(t, "cpu")
const (
nrPeriods = 2000
nrThrottled = 200
throttledTime = uint64(18446744073709551615)
)
cpuStatContent := fmt.Sprintf("nr_periods %d\nnr_throttled %d\nthrottled_time %d\n",
nrPeriods, nrThrottled, throttledTime)
writeFileContents(t, path, map[string]string{
"cpu.stat": cpuStatContent,
})
cpu := &CpuGroup{}
actualStats := *cgroups.NewStats()
err := cpu.GetStats(path, &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) {
path := tempDir(t, "cpu")
cpu := &CpuGroup{}
actualStats := *cgroups.NewStats()
err := cpu.GetStats(path, &actualStats)
if err != nil {
t.Fatal("Expected not to fail, but did")
}
}
func TestInvalidCpuStat(t *testing.T) {
path := tempDir(t, "cpu")
cpuStatContent := `nr_periods 2000
nr_throttled 200
throttled_time fortytwo`
writeFileContents(t, path, map[string]string{
"cpu.stat": cpuStatContent,
})
cpu := &CpuGroup{}
actualStats := *cgroups.NewStats()
err := cpu.GetStats(path, &actualStats)
if err == nil {
t.Fatal("Expected failed stat parsing.")
}
}
func TestCpuSetRtSchedAtApply(t *testing.T) {
path := tempDir(t, "cpu")
const (
rtRuntimeBefore = 0
rtRuntimeAfter = 5000
rtPeriodBefore = 0
rtPeriodAfter = 7000
)
writeFileContents(t, path, map[string]string{
"cpu.rt_runtime_us": strconv.Itoa(rtRuntimeBefore),
"cpu.rt_period_us": strconv.Itoa(rtPeriodBefore),
})
r := &cgroups.Resources{
CpuRtRuntime: rtRuntimeAfter,
CpuRtPeriod: rtPeriodAfter,
}
cpu := &CpuGroup{}
if err := cpu.Apply(path, r, 1234); err != nil {
t.Fatal(err)
}
rtRuntime, err := fscommon.GetCgroupParamUint(path, "cpu.rt_runtime_us")
if err != nil {
t.Fatal(err)
}
if rtRuntime != rtRuntimeAfter {
t.Fatal("Got the wrong value, set cpu.rt_runtime_us failed.")
}
rtPeriod, err := fscommon.GetCgroupParamUint(path, "cpu.rt_period_us")
if err != nil {
t.Fatal(err)
}
if rtPeriod != rtPeriodAfter {
t.Fatal("Got the wrong value, set cpu.rt_period_us failed.")
}
pid, err := fscommon.GetCgroupParamUint(path, "cgroup.procs")
if err != nil {
t.Fatal(err)
}
if pid != 1234 {
t.Fatal("Got the wrong value, set cgroup.procs failed.")
}
}
|
