Virtual machine control plane tuning

OKD Virtualization offers the following tuning options at the control-plane level:

• The highBurst profile, which uses fixed QPS and burst rates, to create hundreds of virtual machines (VMs) in one batch

• Migration setting adjustment based on workload type

Configuring a highBurst profile

Use the highBurst profile to create and maintain a large number of virtual machines (VMs) in one cluster.

Procedure

• Apply the following patch to enable the highBurst tuning policy profile:

  $ oc patch hyperconverged kubevirt-hyperconverged -n kubevirt-hyperconverged \
    --type=json -p='[{"op": "add", "path": "/spec/tuningPolicy", \
    "value": "highBurst"}]'

Verification

• Run the following command to verify the highBurst tuning policy profile is enabled:

  $ oc get kubevirt.kubevirt.io/kubevirt-kubevirt-hyperconverged \
    -n kubevirt-hyperconverged -o go-template --template='{{range $config, \
    $value := .spec.configuration}} {{if eq $config "apiConfiguration" \
    "webhookConfiguration" "controllerConfiguration" "handlerConfiguration"}} \
    {{"\n"}} {{$config}} = {{$value}} {{end}} {{end}} {{"\n"}}