Re: [PATCH 0/5] Memory controller soft limit patches (v7)

[Balbir Singh <balbir@linux.vnet.ibm.com>]

* KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> [2009-03-23 15:12:45]:

> On Mon, 23 Mar 2009 10:52:47 +0530
> Balbir Singh <balbir@linux.vnet.ibm.com> wrote:
> > I have one large swap partition, so I could not test the partial-swap
> > scenario.
> > 
> plz go ahead as you like, Seems no landing point now and I'd like to see
> what I can, later. I'll send no ACK nor NACK, more.
> 
> But please get ack from someone resposible for glorbal memory reclaim.
> Especially for hooks in try_to_free_pages().
> 
> And please make it clear in documentation that 
>  - Depends on the system but this may increase the usage of swap.
>  - Depends on the system but this may not work as the user expected as hard-limit.
>

The documentation mentions that soft limits take a long time before
coming into affect. The use of the word "soft" over "hard" and the
usage of this terminology in resource management clearly implies what
you say in point (2).
 
> Considering corner cases, this is a very complicated/usage-is-difficult feature.
> 
> -Kame
> 
> 

-- 
	Balbir

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