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Code Issues Projects Releases Wiki Activity

1. Make kubelet default to 10ms for CPU quota if limit < 10m for

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backwards compat.
2. Update documentation to reflect minimum CPU limits.

Signed-off-by: Vishnu kannan <vishnuk@google.com>
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Vishnu kannan
2016-03-17 12:10:04 -07:00
parent 6cd8e5c0e6
commit 516559022c
3 changed files with 23 additions and 1 deletions
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docs/proposals/resource-qos.md
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@@ -61,6 +61,7 @@ For each resource, containers can specify a resource request and limit, 0 <= req
### Compressible Resource Guarantees
- For now, we are only supporting CPU.
- Minimum CPU limit is 10 milli cores (`10m`). This a limitation of the Linux kernel.
- Containers are guaranteed to get the amount of CPU they request, they may or may not get additional CPU time (depending on the other jobs running).
- Excess CPU resources will be distributed based on the amount of CPU requested. For example, suppose container A requests for 60% of the CPU, and container B requests for 30% of the CPU. Suppose that both containers are trying to use as much CPU as they can. Then the extra 10% of CPU will be distributed to A and B in a 2:1 ratio (implementation discussed in later sections).
- Containers will be throttled if they exceed their limit. If limit is unspecified, then the containers can use excess CPU when available.