Subject: [mm][PATCH 0/4] Add soft limits to the memory controller v2
Newsgroups: gmane.linux.kernel, gmane.linux.kernel.mm
Date: 2008-02-19 07:02:32 GMT (33 weeks, 23 hours and 21 minutes ago)
This patchset implements the basic changes required to implement soft limits in the memory controller. A soft limit is a variation of the currently supported hard limit feature. A memory cgroup can exceed it's soft limit provided there is no contention for memory. These patches were tested on a PowerPC box, by running a programs in parallel, and checking their behaviour for various soft limit values. These patches were developed on top of 2.6.25-rc2-mm1. Comments, suggestions, criticism are all welcome! TODOs: 1. Currently there is no ordering of memory cgroups over their limit. We use a simple linked list to maintain a list of groups over their limit. In the future, we might want to create a heap of objects ordered by the amount by which they exceed soft limit. 2. Distribute the excessive (non-contended) resources between groups in the ratio of their soft limits 3. Merge with KAMEZAWA's and YAMAMOTO's water mark and background reclaim patches in the long-term series ------ memory-controller-res_counters-soft-limit-setup.patch memory-controller-add-soft-limit-interface.patch memory-controller-reclaim-on-contention.patch memory-controller-add-soft-limit-documentation.patch -- Warm Regards, Balbir Singh Linux Technology Center IBM, ISTL