INFRA Signal 520
Steal time used to moderate CPU demands under virtual CPU contention
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Illustration only Photo by Adi Goldstein on Unsplash
An approach uses steal time to moderate CPU demands in virtualized environments where too many virtual CPUs sharing fewer physical CPUs causes contention and performance degradation.
Virtualized environments commonly run more virtual CPUs than physical CPUs for utilization gains, but contention under heavy load degrades performance. Using steal time to moderate demands provides a feedback mechanism for guests to respond to resource pressure.
Written by elseif from the cluster below · every claim links back to a sourceThe three things worth knowing
Virtualization allows many virtual CPUs to share fewer physical CPUs, increasing utilization
Heavy activity on too many virtual CPUs leads to contention and significant performance degradation
Steal time can be used to moderate CPU demands under these conditions
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