From: Roger Larsson <roger.larsson@norran.net>
To: Benjamin LaHaise <bcrl@redhat.com>
Cc: Rik van Riel <riel@conectiva.com.br>, linux-mm@kvack.org
Subject: Re: [RFC] Concept: Active/busy "reverse" mapping
Date: Fri, 21 Dec 2001 12:52:23 +0100 [thread overview]
Message-ID: <200112211155.fBLBtC426481@mailb.telia.com> (raw)
In-Reply-To: <20011220204524.K6276@redhat.com>
On Fridayen den 21 December 2001 02.45, Benjamin LaHaise wrote:
> On Fri, Dec 21, 2001 at 02:05:26AM +0100, Roger Larsson wrote:
> > The goal of this code is to make sure that used pages are marked as such.
> >
> > This is accomplished by:
> >
> > * When a process is descheduled - look in its mm for used pages - update
> > corresponding page. (Done at most once per tick)
>
> Interesting. The same effect is acheived by the reverse mapping code on
> a global scale while addressing the issue of how to figure out what extent
> memory pressure is needed on the page tables.
>
> -ben
There are other ways too...
Link all used mm:s and check them with kswapd...
etc... etc...
It should be possible to optimize away most performance problems...
/RogerL
PS
I will be away for some days...
DS
--
Roger Larsson
Skelleftea
Sweden
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prev parent reply other threads:[~2001-12-21 11:52 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-20 3:39 [PATCH *] 2.4.16-rmap-6 Rik van Riel
2001-12-21 1:05 ` [RFC] Concept: Active/busy "reverse" mapping Roger Larsson
2001-12-21 1:45 ` Benjamin LaHaise
2001-12-21 11:52 ` Roger Larsson [this message]
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