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Merge pull request #495 from jcvenegas/vcpu-calculation-fix

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docs: cpu: resources: fix vcpu calculation formula
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Julio Montes
2019-06-11 13:36:11 -05:00
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parent 16efde2004 3fe8660a9a
commit 28df7a4ca5
1 changed files with 1 additions and 1 deletions
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design/cpu-constraints.md
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@@ -130,7 +130,7 @@ more vCPUs, you can add more using [docker update][4].
## Container with CPU constraint ## Container with CPU constraint
The runtime calculates the number of vCPUs required by a container with CPU The runtime calculates the number of vCPUs required by a container with CPU
constraints using the following formula: `(quota + (period -1)) / period`, where constraints using the following formula: `vCPUs = ceiling( quota / period )`, where
`quota` specifies the number of microseconds per CPU Period that the container is `quota` specifies the number of microseconds per CPU Period that the container is
guaranteed CPU access and `period` specifies the CPU CFS scheduler period of time guaranteed CPU access and `period` specifies the CPU CFS scheduler period of time
in microseconds. The result determines the number of vCPU to hot plug into the in microseconds. The result determines the number of vCPU to hot plug into the