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SubjectRe: /proc/sys/vm/freepages not writable.
On Sun, Sep 17, 2000 at 03:53:47PM -0300, Rik van Riel wrote:
> On Sun, 17 Sep 2000, Andi Kleen wrote:
> > On Sun, Sep 17, 2000 at 03:09:52PM -0300, Rik van Riel wrote:
>
> > > 1. The inactive_target is 1 second worth of allocations, minus
> > > the amount of frees in 1 second, averaged over a minute
> >
> > So it cannot take load bursts. That's ok for a default, but for
> > special loads it would be good if there was a way for the
> > administrator to overwrite that, similar to the old freepages.
>
> OK, lets see if we can come up with some nice (self-tuning?)
> idea for this at Linux Kongress ;)

I don't like self tuning algorithms for this case, because they tend to
cause a disruption on the first spike (e.g. causing lots of packets dropped
first until the VM can adapt). When the admin says "I don't care if 10MB
are wasted, I want it this way" explicitely he should get his will.


-Andi
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