Benchmarking KubeVirt performance with virtbench

By Bob Glithero, Senior Technical Product Marketing Manager, Portworx by Everpure

Brief summary below. Read the full article here.

To help measure [VM-centric] operational characteristics, we developed the KubeVirt Performance Benchmarking Toolkit (virtbench), an open-source CLI framework for executing reproducible stress tests across KubeVirt-enabled clusters, including KubeVirt on OpenShift and other environments using CSI-compatible storage.

Scenario	What It Tests
DataSource VM Provisioning	Storage cloning efficiency and volume creation times
Single Node Boot Storm	Node-level capacity under simultaneous VM power-on
Multi-Node Boot Storm	Cluster-wide startup performance; simulates post-outage recovery
Live Migration	VM migration stun time; supports sequential and parallel runs
Chaos Benchmark	Concurrent chaos operations (create, resize, clone, restart, snapshot)
Failure and Recovery	HA validation via Fence Agents Remediation; measures time-to-recovery