Merge pull request #1378 from derekwaynecarr/expose_use_hierarchy
Expose memory.use_hierarchy in MemoryStats
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commit
7139b61f7f
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@ -243,6 +243,14 @@ func (s *MemoryGroup) GetStats(path string, stats *cgroups.Stats) error {
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}
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stats.MemoryStats.KernelTCPUsage = kernelTCPUsage
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useHierarchy := strings.Join([]string{"memory", "use_hierarchy"}, ".")
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value, err := getCgroupParamUint(path, useHierarchy)
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if err != nil {
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return err
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}
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if value == 1 {
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stats.MemoryStats.UseHierarchy = true
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}
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return nil
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}
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@ -12,10 +12,11 @@ import (
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const (
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memoryStatContents = `cache 512
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rss 1024`
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memoryUsageContents = "2048\n"
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memoryMaxUsageContents = "4096\n"
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memoryFailcnt = "100\n"
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memoryLimitContents = "8192\n"
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memoryUsageContents = "2048\n"
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memoryMaxUsageContents = "4096\n"
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memoryFailcnt = "100\n"
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memoryLimitContents = "8192\n"
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memoryUseHierarchyContents = "1\n"
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)
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func TestMemorySetMemory(t *testing.T) {
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@ -273,6 +274,7 @@ func TestMemoryStats(t *testing.T) {
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"memory.kmem.max_usage_in_bytes": memoryMaxUsageContents,
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"memory.kmem.failcnt": memoryFailcnt,
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"memory.kmem.limit_in_bytes": memoryLimitContents,
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"memory.use_hierarchy": memoryUseHierarchyContents,
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})
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memory := &MemoryGroup{}
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@ -281,7 +283,7 @@ func TestMemoryStats(t *testing.T) {
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if err != nil {
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t.Fatal(err)
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}
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expectedStats := cgroups.MemoryStats{Cache: 512, Usage: cgroups.MemoryData{Usage: 2048, MaxUsage: 4096, Failcnt: 100, Limit: 8192}, SwapUsage: cgroups.MemoryData{Usage: 2048, MaxUsage: 4096, Failcnt: 100, Limit: 8192}, KernelUsage: cgroups.MemoryData{Usage: 2048, MaxUsage: 4096, Failcnt: 100, Limit: 8192}, Stats: map[string]uint64{"cache": 512, "rss": 1024}}
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expectedStats := cgroups.MemoryStats{Cache: 512, Usage: cgroups.MemoryData{Usage: 2048, MaxUsage: 4096, Failcnt: 100, Limit: 8192}, SwapUsage: cgroups.MemoryData{Usage: 2048, MaxUsage: 4096, Failcnt: 100, Limit: 8192}, KernelUsage: cgroups.MemoryData{Usage: 2048, MaxUsage: 4096, Failcnt: 100, Limit: 8192}, Stats: map[string]uint64{"cache": 512, "rss": 1024}, UseHierarchy: true}
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expectMemoryStatEquals(t, expectedStats, actualStats.MemoryStats)
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}
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@ -84,6 +84,11 @@ func expectMemoryStatEquals(t *testing.T, expected, actual cgroups.MemoryStats)
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expectMemoryDataEquals(t, expected.SwapUsage, actual.SwapUsage)
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expectMemoryDataEquals(t, expected.KernelUsage, actual.KernelUsage)
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if expected.UseHierarchy != actual.UseHierarchy {
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logrus.Printf("Expected memory use hiearchy %v, but found %v\n", expected.UseHierarchy, actual.UseHierarchy)
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t.Fail()
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}
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for key, expValue := range expected.Stats {
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actValue, ok := actual.Stats[key]
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if !ok {
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@ -51,6 +51,8 @@ type MemoryStats struct {
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KernelUsage MemoryData `json:"kernel_usage,omitempty"`
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// usage of kernel TCP memory
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KernelTCPUsage MemoryData `json:"kernel_tcp_usage,omitempty"`
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// if true, memory usage is accounted for throughout a hierarchy of cgroups.
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UseHierarchy bool `json:"use_hierarchy"`
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Stats map[string]uint64 `json:"stats,omitempty"`
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}
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