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37 lines
1.4 KiB
Plaintext
37 lines
1.4 KiB
Plaintext
// Module included in the following assemblies:
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//
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// * virt/virtual_machines/advanced_vm_management/virt-assigning-compute-resources.adoc
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:_mod-docs-content-type: PROCEDURE
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[id="virt-setting-cpu-allocation-ratio_{context}"]
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= Setting the CPU allocation ratio
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The CPU Allocation Ratio specifies the degree of overcommitment by mapping vCPUs to time slices of physical CPUs.
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For example, a mapping or ratio of 10:1 maps 10 virtual CPUs to 1 physical CPU by using time slices.
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To change the default number of vCPUs mapped to each physical CPU, set the `vmiCPUAllocationRatio` value in the `HyperConverged` CR. The pod CPU request is calculated by multiplying the number of vCPUs by the reciprocal of the CPU allocation ratio. For example, if `vmiCPUAllocationRatio` is set to 10, {VirtProductName} will request 10 times fewer CPUs on the pod for that VM.
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.Procedure
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Set the `vmiCPUAllocationRatio` value in the `HyperConverged` CR to define a node CPU allocation ratio.
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. Open the `HyperConverged` CR in your default editor by running the following command:
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+
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[source,terminal]
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----
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$ oc edit hyperconverged kubevirt-hyperconverged -n openshift-cnv
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----
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. Set the `vmiCPUAllocationRatio`:
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+
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[source,yaml]
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----
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...
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spec:
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resourceRequirements:
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vmiCPUAllocationRatio: 1 <1>
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# ...
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----
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<1> When `vmiCPUAllocationRatio` is set to `1`, the maximum amount of vCPUs are requested for the pod. |