Re: Android low memory killer vs. memory pressure notifications

[Rik van Riel]

On 12/19/2011 11:16 AM, KOSAKI Motohiro wrote:
> (12/19/11 5:39 AM), Alan Cox wrote:
> > > The main downside of this approach is that mem_cg needs 20 bytes per
> > > page (on a 32 bit machine). So on a 32 bit machine with 4K pages
> > > that's approx. 0.5% of RAM, or, in other words, 5MB on a 1GB machine.
> >
> > The obvious question would be why? Would fixing memcg make more sense ?
>
> Just historical reason. Initial memcg implement by IBM was just crap.

And the reason for that, I suspect, is that the "proper"
implementation changes the VM by so much that it would
never have been merged in the first place...

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