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27 lines
1.2 KiB
Plaintext
27 lines
1.2 KiB
Plaintext
// Module included in the following assemblies:
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//
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// * /serverless/autoscaling/serverless-autoscaling-concurrency.adoc
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[id="serverless-target-utilization_{context}"]
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= Concurrency target utilization
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This value specifies the percentage of the concurrency limit that is actually targeted by the autoscaler. This is also known as specifying the _hotness_ at which a replica runs, which enables the autoscaler to scale up before the defined hard limit is reached.
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For example, if the `containerConcurrency` annotation value is set to 10, and the `targetUtilizationPercentage` value is set to 70 percent, the autoscaler creates a new replica when the average number of concurrent requests across all existing replicas reaches 7. Requests numbered 7 to 10 are still sent to the existing replicas, but additional replicas are started in anticipation of being required after the `containerConcurrency` annotation limit is reached.
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.Example service configured using the targetUtilizationPercentage annotation
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[source,yaml]
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----
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apiVersion: serving.knative.dev/v1
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kind: Service
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metadata:
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name: example-service
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namespace: default
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spec:
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template:
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metadata:
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annotations:
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autoscaling.knative.dev/targetUtilizationPercentage: "70"
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...
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----
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