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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