From: Rik van Riel <riel@conectiva.com.br>
To: Benjamin LaHaise <bcrl@redhat.com>
Cc: Andrew Morton <akpm@zip.com.au>,
William Lee Irwin III <wli@holomorphy.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: throttling dirtiers
Date: Wed, 31 Jul 2002 18:25:10 -0300 (BRT) [thread overview]
Message-ID: <Pine.LNX.4.44L.0207311824450.23404-100000@imladris.surriel.com> (raw)
In-Reply-To: <20020731171456.S10270@redhat.com>
On Wed, 31 Jul 2002, Benjamin LaHaise wrote:
> On Wed, Jul 31, 2002 at 02:02:03PM -0700, Andrew Morton wrote:
> > But let's back off a bit. The problem is that a process
> > doing a large write() can penalise innocent processes which
> > want to allocate memory.
> >
> > How to fix that?
>
> First off, make it obvious where we block in the allocation path (pawning
> off all memory reaping to kswapd et al is an easy first step here). Then
> make allocators cycle through on a FIFO basis by using something like the
> page reservation patch I came up with a while ago. That'll give us an
> easy place to change scheduling behaviour.
These ingredients are already in 2.4-rmap.
We need an extra component, a lower lateny shrink_cache/page_launder.
regards,
Rik
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next prev parent reply other threads:[~2002-07-31 21:25 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-31 8:26 Andrew Morton
2002-07-31 20:06 ` William Lee Irwin III
2002-07-31 20:23 ` Benjamin LaHaise
2002-07-31 20:26 ` Rik van Riel
2002-07-31 20:59 ` William Lee Irwin III
2002-07-31 21:02 ` Andrew Morton
2002-07-31 21:14 ` Benjamin LaHaise
2002-07-31 21:25 ` Rik van Riel [this message]
2002-07-31 21:32 ` Andrew Morton
2002-07-31 21:55 ` Rik van Riel
2002-07-31 22:24 ` Andrew Morton
2002-07-31 22:32 ` Rik van Riel
2002-07-31 21:28 ` Andrew Morton
2002-07-31 21:35 ` Rik van Riel
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