Re: [RFC][PATCH 1/5] memcg: change for softlimit.

KAMEZAWA Hiroyuki
2009-08-28T14:40:58Z

KAMEZAWA Hiroyuki wrote:
> Balbir Singh wrote:
>> But Bob and Mike might need to set soft limits between themselves. if
>> soft limit of gold is 1G and bob needs to be close to 750M and mike
>> 250M, how do we do it without supporting what we have today?
>>
> Don't use hierarchy or don't use softlimit.
> (I never think fine-grain soft limit can be useful.)
>
> Anyway, I have to modify unnecessary hacks for res_counter of softlimit.
> plz allow modification. that's bad.
> I postpone RB-tree breakage problem, plz explain it or fix it by yourself.
>
I changed my mind....per-zone RB-tree is also broken ;)

Why I don't like broken system is a function which a user can't
know/calculate how-it-works is of no use in mission critical systems.

I'd like to think how-to-fix it with better algorithm. Maybe RB-tree
is not a choice.

Thanks,
-Kame