lkml.org 
[lkml]   [2009]   [Jan]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC][PATCH 0/4] Memory controller soft limit patches
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


\
 
 \ /
  Last update: 2009-01-07 20:03    [W:0.056 / U:7.440 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site