Re: [RFC][PATCH] prevent incorrect oom under split_lru

[KOSAKI Motohiro]

> > But if such emergency happen in embedded system, application can't be
> > executed for some time.
> > I am not sure how long time it take.
> > But In some application, schedule period is very important than memory
> > reclaim latency.
> > 
> > Now, In your patch, when such emergency happen, it continue to reclaim
> > page until it will scan entire page of lru list.
> > It
> 
> IMHO embedded real-time apps shoud mlockall() and not do anything that
> can result in memory allocations in their fast (deterministic) paths.

Indeed.

> The much more important case is desktop usage - that is where we run non
> real-time code, but do expect 'low' latency due to user-interaction.
> 
> >From hitting swap on my 512M laptop (rather frequent occurance) I know
> we can do better here,..

nice suggestion.
thanks.


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