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Calculate memory.working_set.limit.pct for pod and container metricset #29547

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Dec 21, 2021
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Calculate memory.working_set.limit.pct for pod and container metricset #29547

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Calculate memory.working_set.limit.pct for pod and container metricset
MichaelKatsoulis Dec 20, 2021
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changelog entry
MichaelKatsoulis Dec 21, 2021
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1 change: 1 addition & 0 deletions CHANGELOG.next.asciidoc
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Expand Up @@ -145,6 +145,7 @@ https://github.com/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
- Preliminary AIX support {pull}27954[27954]
- Add option to skip older k8s events {pull}29396[29396]
- Add `add_resource_metadata` configuration to Kubernetes module. {pull}29133[29133]
- Add `memory.workingset.limit.pct` field in Kubernetes container/pod metricset. {pull}29547[29547]

*Packetbeat*

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24 changes: 24 additions & 0 deletions metricbeat/docs/fields.asciidoc
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Expand Up @@ -41959,6 +41959,18 @@ format: bytes

--

*`kubernetes.container.memory.workingset.limit.pct`*::
+
--
Working set memory usage as a percentage of the defined limit for the container (or total node allocatable memory if unlimited)


type: scaled_float

format: percent

--

*`kubernetes.container.memory.pagefaults`*::
+
--
Expand Down Expand Up @@ -43023,6 +43035,18 @@ format: bytes

--

*`kubernetes.pod.memory.working_set.limit.pct`*::
+
--
Working set memory usage as a percentage of the defined limit for the pod containers (or total node allocatable memory if unlimited)


type: scaled_float

format: percent

--


*`kubernetes.pod.memory.rss.bytes`*::
+
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5 changes: 5 additions & 0 deletions metricbeat/module/kubernetes/container/_meta/fields.yml
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Expand Up @@ -126,6 +126,11 @@
format: bytes
description: >
Working set memory usage
- name: limit.pct
type: scaled_float
format: percent
description: >
Working set memory usage as a percentage of the defined limit for the container (or total node allocatable memory if unlimited)
- name: pagefaults
type: double
description: >
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9 changes: 5 additions & 4 deletions metricbeat/module/kubernetes/container/container_test.go
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Expand Up @@ -69,10 +69,11 @@ func TestEventMapping(t *testing.T) {
"memory.majorpagefaults": 0,

// calculated pct fields:
"cpu.usage.node.pct": 0.005631997,
"cpu.usage.limit.pct": 0.005631997,
"memory.usage.node.pct": 0.01,
"memory.usage.limit.pct": 0.1,
"cpu.usage.node.pct": 0.005631997,
"cpu.usage.limit.pct": 0.005631997,
"memory.usage.node.pct": 0.01,
"memory.usage.limit.pct": 0.1,
"memory.workingset.limit.pct": 0.09943977591036414,

"name": "nginx",

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1 change: 1 addition & 0 deletions metricbeat/module/kubernetes/container/data.go
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Expand Up @@ -135,6 +135,7 @@ func eventMapping(content []byte, perfMetrics *util.PerfMetricsCache) ([]common.

if memLimit > 0 {
containerEvent.Put("memory.usage.limit.pct", float64(container.Memory.UsageBytes)/memLimit)
containerEvent.Put("memory.workingset.limit.pct", float64(container.Memory.WorkingSetBytes)/memLimit)
}

events = append(events, containerEvent)
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2 changes: 1 addition & 1 deletion metricbeat/module/kubernetes/fields.go
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5 changes: 5 additions & 0 deletions metricbeat/module/kubernetes/pod/_meta/fields.yml
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Expand Up @@ -94,6 +94,11 @@
format: bytes
description: >
Total working set memory
- name: limit.pct
type: scaled_float
format: percent
description: >
Working set memory usage as a percentage of the defined limit for the pod containers (or total node allocatable memory if unlimited)
- name: rss
type: group
fields:
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3 changes: 3 additions & 0 deletions metricbeat/module/kubernetes/pod/data.go
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Expand Up @@ -128,6 +128,8 @@ func eventMapping(content []byte, perfMetrics *util.PerfMetricsCache) ([]common.
}
if memLimit > 0 {
podEvent.Put("memory.usage.limit.pct", float64(usageMem)/memLimit)
podEvent.Put("memory.working_set.limit.pct", float64(workingSet)/memLimit)
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}
}

Expand All @@ -137,6 +139,7 @@ func eventMapping(content []byte, perfMetrics *util.PerfMetricsCache) ([]common.
}
if memLimit > 0 {
podEvent.Put("memory.usage.limit.pct", float64(workingSet)/memLimit)
podEvent.Put("memory.working_set.limit.pct", float64(workingSet)/memLimit)
}
}

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7 changes: 4 additions & 3 deletions metricbeat/module/kubernetes/pod/pod_test.go
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Expand Up @@ -64,9 +64,10 @@ func TestEventMapping(t *testing.T) {
"cpu.usage.node.pct": 0.005631997,
"cpu.usage.limit.pct": 0.005631997,

"memory.usage.bytes": 1462272,
"memory.usage.node.pct": 0.01,
"memory.usage.limit.pct": 0.1,
"memory.usage.bytes": 1462272,
"memory.usage.node.pct": 0.01,
"memory.usage.limit.pct": 0.1,
"memory.working_set.limit.pct": 0.09943977591036414,
}

for k, v := range testCases {
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