Messages in this thread | | | Date | Thu, 8 Jan 2009 00:26:27 +0530 | From | Dhaval Giani <> | Subject | Re: [RFC][PATCH 0/4] Memory controller soft limit patches |
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On Thu, Jan 08, 2009 at 12:11:10AM +0530, Balbir Singh wrote: > > Here is v1 of the new soft limit implementation. Soft limits is a new feature > for the memory resource controller, something similar has existed in the > group scheduler in the form of shares. We'll compare shares and soft limits > below. I've had soft limit implementations earlier, but I've discarded those > approaches in favour of this one. > > Soft limits are the most useful feature to have for environments where > the administrator wants to overcommit the system, such that only on memory > contention do the limits become active. The current soft limits implementation > provides a soft_limit_in_bytes interface for the memory controller and not > for memory+swap controller. The implementation maintains an RB-Tree of groups > that exceed their soft limit and starts reclaiming from the group that > exceeds this limit by the maximum amount. > > This is an RFC implementation and is not meant for inclusion > > TODOs > > 1. The shares interface is not yet implemented, the current soft limit > implementation is not yet hierarchy aware. The end goal is to add > a shares interface on top of soft limits and to maintain shares in > a manner similar to the group scheduler
Just to clarify, when there is no contention, you want to share memory proportionally?
thanks, -- regards, Dhaval
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