Re: /proc/sys/vm/freepages not writable.

From: Rik van Riel (riel@conectiva.com.br)
Date: Tue Sep 19 2000 - 03:52:25 EDT

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    On Mon, 18 Sep 2000, Andi Kleen wrote:
    > 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.

    Indeed, you are right. I'll add this feature shortly.

    Rik

    --
    "What you're running that piece of shit Gnome?!?!"
           -- Miguel de Icaza, UKUUG 2000
    

    http://www.conectiva.com/ http://www.surriel.com/

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