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// +build linux
package fs
import (
"fmt"
"strconv"
"testing"
"github.com/opencontainers/runc/libcontainer/cgroups"
"github.com/opencontainers/runc/libcontainer/cgroups/fscommon"
"github.com/opencontainers/runc/libcontainer/configs"
)
const (
hugetlbUsageContents = "128\n"
hugetlbMaxUsageContents = "256\n"
hugetlbFailcnt = "100\n"
)
const (
usage = "hugetlb.%s.usage_in_bytes"
limit = "hugetlb.%s.limit_in_bytes"
maxUsage = "hugetlb.%s.max_usage_in_bytes"
failcnt = "hugetlb.%s.failcnt"
)
func TestHugetlbSetHugetlb(t *testing.T) {
helper := NewCgroupTestUtil("hugetlb", t)
defer helper.cleanup()
const (
hugetlbBefore = 256
hugetlbAfter = 512
)
for _, pageSize := range HugePageSizes {
helper.writeFileContents(map[string]string{
fmt.Sprintf(limit, pageSize): strconv.Itoa(hugetlbBefore),
})
}
for _, pageSize := range HugePageSizes {
helper.CgroupData.config.Resources.HugetlbLimit = []*configs.HugepageLimit{
{
Pagesize: pageSize,
Limit: hugetlbAfter,
},
}
hugetlb := &HugetlbGroup{}
if err := hugetlb.Set(helper.CgroupPath, helper.CgroupData.config.Resources); err != nil {
t.Fatal(err)
}
}
for _, pageSize := range HugePageSizes {
limit := fmt.Sprintf(limit, pageSize)
value, err := fscommon.GetCgroupParamUint(helper.CgroupPath, limit)
if err != nil {
t.Fatalf("Failed to parse %s - %s", limit, err)
}
if value != hugetlbAfter {
t.Fatalf("Set hugetlb.limit_in_bytes failed. Expected: %v, Got: %v", hugetlbAfter, value)
}
}
}
func TestHugetlbStats(t *testing.T) {
helper := NewCgroupTestUtil("hugetlb", t)
defer helper.cleanup()
for _, pageSize := range HugePageSizes {
helper.writeFileContents(map[string]string{
fmt.Sprintf(usage, pageSize): hugetlbUsageContents,
fmt.Sprintf(maxUsage, pageSize): hugetlbMaxUsageContents,
fmt.Sprintf(failcnt, pageSize): hugetlbFailcnt,
})
}
hugetlb := &HugetlbGroup{}
actualStats := *cgroups.NewStats()
err := hugetlb.GetStats(helper.CgroupPath, &actualStats)
if err != nil {
t.Fatal(err)
}
expectedStats := cgroups.HugetlbStats{Usage: 128, MaxUsage: 256, Failcnt: 100}
for _, pageSize := range HugePageSizes {
expectHugetlbStatEquals(t, expectedStats, actualStats.HugetlbStats[pageSize])
}
}
func TestHugetlbStatsNoUsageFile(t *testing.T) {
t.Skip("Disabled unreliable test")
helper := NewCgroupTestUtil("hugetlb", t)
defer helper.cleanup()
helper.writeFileContents(map[string]string{
maxUsage: hugetlbMaxUsageContents,
})
hugetlb := &HugetlbGroup{}
actualStats := *cgroups.NewStats()
err := hugetlb.GetStats(helper.CgroupPath, &actualStats)
if err == nil {
t.Fatal("Expected failure")
}
}
func TestHugetlbStatsNoMaxUsageFile(t *testing.T) {
t.Skip("Disabled unreliable test")
helper := NewCgroupTestUtil("hugetlb", t)
defer helper.cleanup()
for _, pageSize := range HugePageSizes {
helper.writeFileContents(map[string]string{
fmt.Sprintf(usage, pageSize): hugetlbUsageContents,
})
}
hugetlb := &HugetlbGroup{}
actualStats := *cgroups.NewStats()
err := hugetlb.GetStats(helper.CgroupPath, &actualStats)
if err == nil {
t.Fatal("Expected failure")
}
}
func TestHugetlbStatsBadUsageFile(t *testing.T) {
t.Skip("Disabled unreliable test")
helper := NewCgroupTestUtil("hugetlb", t)
defer helper.cleanup()
for _, pageSize := range HugePageSizes {
helper.writeFileContents(map[string]string{
fmt.Sprintf(usage, pageSize): "bad",
maxUsage: hugetlbMaxUsageContents,
})
}
hugetlb := &HugetlbGroup{}
actualStats := *cgroups.NewStats()
err := hugetlb.GetStats(helper.CgroupPath, &actualStats)
if err == nil {
t.Fatal("Expected failure")
}
}
func TestHugetlbStatsBadMaxUsageFile(t *testing.T) {
t.Skip("Disabled unreliable test")
helper := NewCgroupTestUtil("hugetlb", t)
defer helper.cleanup()
helper.writeFileContents(map[string]string{
usage: hugetlbUsageContents,
maxUsage: "bad",
})
hugetlb := &HugetlbGroup{}
actualStats := *cgroups.NewStats()
err := hugetlb.GetStats(helper.CgroupPath, &actualStats)
if err == nil {
t.Fatal("Expected failure")
}
}
|
