Re: [RFC PATCH] mm: madvise: Ignore repeated MADV_DONTNEED hints

[Davidlohr Bueso]

On Mon, 2015-02-02 at 14:35 -0800, Andrew Morton wrote:
> On Mon, 2 Feb 2015 22:18:24 +0000 Mel Gorman <mgorman@xxxxxxx> wrote:
> 
> > > Is there something
> > > preventing this from being addressed within glibc?
> >  
> > I doubt it other than I expect they'll punt it back and blame either the
> > application for being stupid or the kernel for being slow.
> 
> *Is* the application being stupid?  What is it actually doing? 
> Something like
> 
> pthread_routine()
> {
> 	p = malloc(X);
> 	do_some(work);
> 	free(p);

Ebizzy adds a time based loop in there. But yeah, pretty much a standard
pthread model.

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