From: Jesper Juhl <jesper.juhl@gmail.com>
To: Con Kolivas <kernel@kolivas.org>
Cc: linux kernel mailing list <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@osdl.org>, ck list <ck@vds.kolivas.org>
Subject: Re: [PATCH] mm - implement swap prefetching
Date: Mon, 10 Oct 2005 16:35:03 +0200 [thread overview]
Message-ID: <9a8748490510100735k3cabd1csdc2aa332f70f43d5@mail.gmail.com> (raw)
In-Reply-To: <200510110023.02426.kernel@kolivas.org>
On 10/10/05, Con Kolivas <kernel@kolivas.org> wrote:
> Andrew could you please consider this for -mm
>
> Small changes to the style after suggestions from Pekka Enberg (thanks), and
> changed the default size of prefetch to gently increase with size of ram.
> Functionally this is the same code as vm-swap_prefetch-15 and I believe ready
> for a wider audience.
>
+ What this will do on workstations is slowly bring back applications
+ that have swapped out after memory intensive workloads back into
+ physical ram if you have free ram at a later stage and the machine
+ is relatively idle. This means that when you come back to your
+ computer after leaving it idle for a while, applications will come
+ to life faster. Note that your swap usage will appear to increase
+ but these are cached pages, can be dropped freely by the vm, and it
+ should stabilise around 50% swap usage.
+
+ Desktop users will most likely want to say Y.
How about a little note about the impact for server users as well?
You recommend that desktop users enable this, but you don't give any
recommendation for servers.
--
Jesper Juhl <jesper.juhl@gmail.com>
Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html
Plain text mails only, please http://www.expita.com/nomime.html
next prev parent reply other threads:[~2005-10-10 14:35 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-10 14:23 Con Kolivas
2005-10-10 14:35 ` Jesper Juhl [this message]
2005-10-10 14:39 ` Con Kolivas
2005-10-11 6:48 ` Con Kolivas
2005-10-12 5:34 ` Andrew Morton
2005-10-12 12:00 ` Con Kolivas
2005-10-15 8:10 ` Con Kolivas
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