Re: TMPFS over NFSv4

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Got it cleared.

BTW, nice example ... US Banking System :-)

__
tharindu.info

"those that can, do. Those that can’t, complain." -- Linus



On Mon, May 24, 2010 at 11:02 AM, Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote:
> On Mon, 24 May 2010 10:26:39 +0100
> Tharindu Rukshan Bamunuarachchi <btharindu@xxxxxxxxx> wrote:
>
>> thankx a lot Hugh ... I will try this out ... (bit harder patch
>> already patched SLES kernel :-p ) ....
>>
>> BTW, what does Alan means by "strict overcommit" ?
>
> Strict overcommit works like banks should. It tries to ensure that at any
> point it has sufficient swap and memory to fulfill any possible use of
> allocated address space. So in strict overcommit mode you should almost
> never see an OOM kill (there are perverse cases as always), but you will
> need a lot more swap that may well never be used.
>
> In the normal mode the kernel works like the US banking system and makes
> speculative guesses that all the resources it hands out will never be
> needed at once. That has the corresponding risk that one day it might at
> which point you get a meltdown (or in the kernel case OOM kills)
>
> Alan
>
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