From: Con Kolivas <kernel@kolivas.org>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Andrew Morton <akpm@osdl.org>,
linux-mm@kvack.org, ck@vds.kolivas.org, pj@sgi.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: Implement Swap Prefetching v23
Date: Fri, 10 Feb 2006 15:14:39 +1100 [thread overview]
Message-ID: <200602101514.40140.kernel@kolivas.org> (raw)
In-Reply-To: <43EC1164.4000605@yahoo.com.au>
On Friday 10 February 2006 15:07, Nick Piggin wrote:
> Con Kolivas wrote:
> > On Friday 10 February 2006 14:25, Andrew Morton wrote:
> >>But where does it put the pages? If it was really "free", they'd go onto
> >>the tail of the inactive list.
> >
> > It puts them in swapcache. This seems to work nicely as a nowhere-land
> > place where they don't have much affect on anything until we need them or
> > need more ram. This has worked well, but I'm open to other suggestions.
>
> Well they go on the head of the inactive list and will kick out file
> backed pagecache. Which was my concern about reducing the usefulness
> of useful swapping on desktop systems.
Ok I see. We don't have a way to add to the tail of that list though? Is that
a worthwhile addition to this (ever growing) project? That would definitely
have an impact on the other code if not all done within swap_prefetch.c..
which would also be quite a large open coded something.
Cheers,
Con
WARNING: multiple messages have this Message-ID (diff)
From: Con Kolivas <kernel@kolivas.org>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Andrew Morton <akpm@osdl.org>,
linux-mm@kvack.org, ck@vds.kolivas.org, pj@sgi.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: Implement Swap Prefetching v23
Date: Fri, 10 Feb 2006 15:14:39 +1100 [thread overview]
Message-ID: <200602101514.40140.kernel@kolivas.org> (raw)
In-Reply-To: <43EC1164.4000605@yahoo.com.au>
On Friday 10 February 2006 15:07, Nick Piggin wrote:
> Con Kolivas wrote:
> > On Friday 10 February 2006 14:25, Andrew Morton wrote:
> >>But where does it put the pages? If it was really "free", they'd go onto
> >>the tail of the inactive list.
> >
> > It puts them in swapcache. This seems to work nicely as a nowhere-land
> > place where they don't have much affect on anything until we need them or
> > need more ram. This has worked well, but I'm open to other suggestions.
>
> Well they go on the head of the inactive list and will kick out file
> backed pagecache. Which was my concern about reducing the usefulness
> of useful swapping on desktop systems.
Ok I see. We don't have a way to add to the tail of that list though? Is that
a worthwhile addition to this (ever growing) project? That would definitely
have an impact on the other code if not all done within swap_prefetch.c..
which would also be quite a large open coded something.
Cheers,
Con
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next prev parent reply other threads:[~2006-02-10 4:15 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-10 2:55 [PATCH] mm: Implement Swap Prefetching v23 Con Kolivas
2006-02-10 2:55 ` Con Kolivas
2006-02-10 3:25 ` Andrew Morton
2006-02-10 3:25 ` Andrew Morton
2006-02-10 3:49 ` Con Kolivas
2006-02-10 3:49 ` Con Kolivas
2006-02-10 4:07 ` Nick Piggin
2006-02-10 4:07 ` Nick Piggin
2006-02-10 4:14 ` Con Kolivas [this message]
2006-02-10 4:14 ` Con Kolivas
2006-02-10 4:17 ` Nick Piggin
2006-02-10 4:17 ` Nick Piggin
2006-02-10 4:25 ` Andrew Morton
2006-02-10 4:25 ` Andrew Morton
2006-02-10 4:45 ` Nick Piggin
2006-02-10 4:45 ` Nick Piggin
2006-02-10 4:55 ` Andrew Morton
2006-02-10 4:55 ` Andrew Morton
2006-02-10 5:01 ` Nick Piggin
2006-02-10 5:01 ` Nick Piggin
2006-02-10 5:26 ` Con Kolivas
2006-02-10 5:26 ` Con Kolivas
2006-02-10 5:32 ` Nick Piggin
2006-02-10 5:32 ` Nick Piggin
2006-02-10 5:37 ` Con Kolivas
2006-02-10 5:37 ` Con Kolivas
2006-02-10 5:43 ` Nick Piggin
2006-02-10 5:43 ` Nick Piggin
2006-02-10 5:48 ` Con Kolivas
2006-02-10 5:48 ` Con Kolivas
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