Memory cgroup hierarchy introduction
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- v1 Latest4 patches 27 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/4 | Memory cgroup hierarchy documentationDocumentation/ | +34 | 3 replies | |
| 2/4 | Memory cgroup resource counters for hierarchyinclude/ kernel/ mm/ | +46 | 4 replies | |
| 3/4 | Memory cgroup hierarchical reclaimmm/ | +129 | 6 replies | |
| 4/4 | Memory cgroup hierarchy feature selectormm/ | +37 | 9 replies |
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Cover letter [mm][PATCH 0/4] Memory cgroup hierarchy introduction
This patch follows several iterations of the memory controller hierarchy patches. The hardwall approach by Kamezawa-San[1]. Version 1 of this patchset at [2].
The current approach is based on [2] and has the following properties
1. Hierarchies are very natural in a filesystem like the cgroup filesystem. A multi-tree hierarchy has been supported for a long time in filesystems. When the feature is turned on, we honor hierarchies such that the root accounts for resource usage of all children and limits can be set at any point in the hierarchy. Any memory cgroup is limited by limits along the hierarchy. The total usage of all children of a node cannot exceed the limit of the node.
2. The hierarchy feature is selectable and off by default
3. Hierarchies are expensive and the trade off is depth versus performance. Hierarchies can also be completely turned off.
The patches are against 2.6.28-rc2-mm1 and were tested in a KVM instance with SMP and swap turned on.
Series
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memcg-hierarchy-documentation.patch
resource-counters-hierarchy-support.patch
memcg-hierarchical-reclaim.patch
memcg-add-hierarchy-selector.patch
Reviews? Comments?
References
1. http://linux.derkeiler.com/Mailing-Lists/Kernel/2008-06/msg05417.html
2. http://kerneltrap.org/mailarchive/linux-kernel/2008/4/19/1513644/thread
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