func TestCpuStats(t *testing.T) {
helper := NewCgroupTestUtil("cpu", t)
defer helper.cleanup()
const (
kNrPeriods = 2000
kNrThrottled = 200
kThrottledTime = uint64(18446744073709551615)
)
cpuStatContent := fmt.Sprintf("nr_periods %d\n nr_throttled %d\n throttled_time %d\n",
kNrPeriods, kNrThrottled, kThrottledTime)
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: kNrPeriods,
ThrottledPeriods: kNrThrottled,
ThrottledTime: kThrottledTime}
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 TestNonCFQBlkioStats(t *testing.T) {
helper := NewCgroupTestUtil("blkio", t)
defer helper.cleanup()
helper.writeFileContents(map[string]string{
"blkio.io_service_bytes_recursive": "",
"blkio.io_serviced_recursive": "",
"blkio.io_queued_recursive": "",
"blkio.sectors_recursive": "",
"blkio.io_service_time_recursive": "",
"blkio.io_wait_time_recursive": "",
"blkio.io_merged_recursive": "",
"blkio.time_recursive": "",
"blkio.throttle.io_service_bytes": throttleServiceBytes,
"blkio.throttle.io_serviced": throttleServiced,
})
blkio := &BlkioGroup{}
actualStats := *cgroups.NewStats()
err := blkio.GetStats(helper.CgroupPath, &actualStats)
if err != nil {
t.Fatal(err)
}
// Verify expected stats.
expectedStats := cgroups.BlkioStats{}
appendBlkioStatEntry(&expectedStats.IoServiceBytesRecursive, 8, 0, 11030528, "Read")
appendBlkioStatEntry(&expectedStats.IoServiceBytesRecursive, 8, 0, 23, "Write")
appendBlkioStatEntry(&expectedStats.IoServiceBytesRecursive, 8, 0, 42, "Sync")
appendBlkioStatEntry(&expectedStats.IoServiceBytesRecursive, 8, 0, 11030528, "Async")
appendBlkioStatEntry(&expectedStats.IoServiceBytesRecursive, 8, 0, 11030528, "Total")
appendBlkioStatEntry(&expectedStats.IoServiceBytesRecursive, 252, 0, 11030528, "Read")
appendBlkioStatEntry(&expectedStats.IoServiceBytesRecursive, 252, 0, 23, "Write")
appendBlkioStatEntry(&expectedStats.IoServiceBytesRecursive, 252, 0, 42, "Sync")
appendBlkioStatEntry(&expectedStats.IoServiceBytesRecursive, 252, 0, 11030528, "Async")
appendBlkioStatEntry(&expectedStats.IoServiceBytesRecursive, 252, 0, 11030528, "Total")
appendBlkioStatEntry(&expectedStats.IoServicedRecursive, 8, 0, 164, "Read")
appendBlkioStatEntry(&expectedStats.IoServicedRecursive, 8, 0, 23, "Write")
appendBlkioStatEntry(&expectedStats.IoServicedRecursive, 8, 0, 42, "Sync")
appendBlkioStatEntry(&expectedStats.IoServicedRecursive, 8, 0, 164, "Async")
appendBlkioStatEntry(&expectedStats.IoServicedRecursive, 8, 0, 164, "Total")
appendBlkioStatEntry(&expectedStats.IoServicedRecursive, 252, 0, 164, "Read")
appendBlkioStatEntry(&expectedStats.IoServicedRecursive, 252, 0, 23, "Write")
appendBlkioStatEntry(&expectedStats.IoServicedRecursive, 252, 0, 42, "Sync")
appendBlkioStatEntry(&expectedStats.IoServicedRecursive, 252, 0, 164, "Async")
appendBlkioStatEntry(&expectedStats.IoServicedRecursive, 252, 0, 164, "Total")
expectBlkioStatsEquals(t, expectedStats, actualStats.BlkioStats)
}
func GetStats(systemPaths map[string]string) (*cgroups.Stats, error) {
stats := cgroups.NewStats()
for name, path := range systemPaths {
sys, ok := subsystems[name]
if !ok || !cgroups.PathExists(path) {
continue
}
if err := sys.GetStats(path, stats); err != nil {
return nil, err
}
}
return stats, nil
}
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 TestBlkioStatsNoQueuedFile(t *testing.T) {
helper := NewCgroupTestUtil("blkio", t)
defer helper.cleanup()
helper.writeFileContents(map[string]string{
"blkio.io_service_bytes_recursive": serviceBytesRecursiveContents,
"blkio.io_serviced_recursive": servicedRecursiveContents,
"blkio.sectors_recursive": sectorsRecursiveContents,
"blkio.io_service_time_recursive": serviceTimeRecursiveContents,
"blkio.io_wait_time_recursive": waitTimeRecursiveContents,
"blkio.io_merged_recursive": mergedRecursiveContents,
"blkio.time_recursive": timeRecursiveContents,
})
blkio := &BlkioGroup{}
actualStats := *cgroups.NewStats()
err := blkio.GetStats(helper.CgroupPath, &actualStats)
if err != nil {
t.Fatalf("Failed unexpectedly: %s", err)
}
}
func TestBlkioStatsUnexpectedFieldType(t *testing.T) {
helper := NewCgroupTestUtil("blkio", t)
defer helper.cleanup()
helper.writeFileContents(map[string]string{
"blkio.io_service_bytes_recursive": "8:0 Read Write",
"blkio.io_serviced_recursive": servicedRecursiveContents,
"blkio.io_queued_recursive": queuedRecursiveContents,
"blkio.sectors_recursive": sectorsRecursiveContents,
"blkio.io_service_time_recursive": serviceTimeRecursiveContents,
"blkio.io_wait_time_recursive": waitTimeRecursiveContents,
"blkio.io_merged_recursive": mergedRecursiveContents,
"blkio.time_recursive": timeRecursiveContents,
})
blkio := &BlkioGroup{}
actualStats := *cgroups.NewStats()
err := blkio.GetStats(helper.CgroupPath, &actualStats)
if err == nil {
t.Fatal("Expected to fail, but did not")
}
}
func TestBlkioStats(t *testing.T) {
helper := NewCgroupTestUtil("blkio", t)
defer helper.cleanup()
helper.writeFileContents(map[string]string{
"blkio.io_service_bytes_recursive": serviceBytesRecursiveContents,
"blkio.io_serviced_recursive": servicedRecursiveContents,
"blkio.io_queued_recursive": queuedRecursiveContents,
"blkio.io_service_time_recursive": serviceTimeRecursiveContents,
"blkio.io_wait_time_recursive": waitTimeRecursiveContents,
"blkio.io_merged_recursive": mergedRecursiveContents,
"blkio.time_recursive": timeRecursiveContents,
"blkio.sectors_recursive": sectorsRecursiveContents,
})
blkio := &BlkioGroup{}
actualStats := *cgroups.NewStats()
err := blkio.GetStats(helper.CgroupPath, &actualStats)
if err != nil {
t.Fatal(err)
}
// Verify expected stats.
expectedStats := cgroups.BlkioStats{}
appendBlkioStatEntry(&expectedStats.SectorsRecursive, 8, 0, 1024, "")
appendBlkioStatEntry(&expectedStats.IoServiceBytesRecursive, 8, 0, 100, "Read")
appendBlkioStatEntry(&expectedStats.IoServiceBytesRecursive, 8, 0, 200, "Write")
appendBlkioStatEntry(&expectedStats.IoServiceBytesRecursive, 8, 0, 300, "Sync")
appendBlkioStatEntry(&expectedStats.IoServiceBytesRecursive, 8, 0, 500, "Async")
appendBlkioStatEntry(&expectedStats.IoServiceBytesRecursive, 8, 0, 500, "Total")
appendBlkioStatEntry(&expectedStats.IoServicedRecursive, 8, 0, 10, "Read")
appendBlkioStatEntry(&expectedStats.IoServicedRecursive, 8, 0, 40, "Write")
appendBlkioStatEntry(&expectedStats.IoServicedRecursive, 8, 0, 20, "Sync")
appendBlkioStatEntry(&expectedStats.IoServicedRecursive, 8, 0, 30, "Async")
appendBlkioStatEntry(&expectedStats.IoServicedRecursive, 8, 0, 50, "Total")
appendBlkioStatEntry(&expectedStats.IoQueuedRecursive, 8, 0, 1, "Read")
appendBlkioStatEntry(&expectedStats.IoQueuedRecursive, 8, 0, 4, "Write")
appendBlkioStatEntry(&expectedStats.IoQueuedRecursive, 8, 0, 2, "Sync")
appendBlkioStatEntry(&expectedStats.IoQueuedRecursive, 8, 0, 3, "Async")
appendBlkioStatEntry(&expectedStats.IoQueuedRecursive, 8, 0, 5, "Total")
appendBlkioStatEntry(&expectedStats.IoServiceTimeRecursive, 8, 0, 173959, "Read")
appendBlkioStatEntry(&expectedStats.IoServiceTimeRecursive, 8, 0, 0, "Write")
appendBlkioStatEntry(&expectedStats.IoServiceTimeRecursive, 8, 0, 0, "Sync")
appendBlkioStatEntry(&expectedStats.IoServiceTimeRecursive, 8, 0, 173959, "Async")
appendBlkioStatEntry(&expectedStats.IoServiceTimeRecursive, 8, 0, 17395, "Total")
appendBlkioStatEntry(&expectedStats.IoWaitTimeRecursive, 8, 0, 15571, "Read")
appendBlkioStatEntry(&expectedStats.IoWaitTimeRecursive, 8, 0, 0, "Write")
appendBlkioStatEntry(&expectedStats.IoWaitTimeRecursive, 8, 0, 0, "Sync")
appendBlkioStatEntry(&expectedStats.IoWaitTimeRecursive, 8, 0, 15571, "Async")
appendBlkioStatEntry(&expectedStats.IoWaitTimeRecursive, 8, 0, 15571, "Total")
appendBlkioStatEntry(&expectedStats.IoMergedRecursive, 8, 0, 5, "Read")
appendBlkioStatEntry(&expectedStats.IoMergedRecursive, 8, 0, 10, "Write")
appendBlkioStatEntry(&expectedStats.IoMergedRecursive, 8, 0, 0, "Sync")
appendBlkioStatEntry(&expectedStats.IoMergedRecursive, 8, 0, 0, "Async")
appendBlkioStatEntry(&expectedStats.IoMergedRecursive, 8, 0, 15, "Total")
appendBlkioStatEntry(&expectedStats.IoTimeRecursive, 8, 0, 8, "")
expectBlkioStatsEquals(t, expectedStats, actualStats.BlkioStats)
}