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Periodically change memcg threshold.

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David Ashpole 2018-01-02 16:12:30 -08:00 committed by GitHub
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contributors/design-proposals/node/kubelet-eviction.md
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@ -230,6 +230,11 @@ For example, the eviction manager could start collecting observations every seco
manager are not completely in-sync, the threshold can help the eviction manager to respond faster than
it otherwise would. After a short period, it would resume the standard interval of sync loop calls.
4. Periodically adjust the memory cgroup threshold based on total_inactive_file
For example, the eviction manager would set the threshold for usage_in_bytes to mem_capacity - eviction_hard +
total_inactive_file. This would mean that the threshold is crossed when usage_in_bytes - total_inactive_file
= mem_capacity - eviction_hard. As long as total_inactive_file changes slowly, this would be fairly accurate.
### Disk
Let's assume the operator started the `kubelet` with the following: