From: "Ray Lee" <ray-lk@madrabbit.org>
To: hamid.jahanjou@gmail.com
Cc: "Rik van Riel" <riel@redhat.com>, "Zan Lynx" <zlynx@acm.org>,
"Andi Kleen" <andi@firstfloor.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] VM: Implements the swap-out page-clustering technique
Date: Wed, 10 Sep 2008 10:08:07 -0700 [thread overview]
Message-ID: <2c0942db0809101008j55ea39dfx8dbf6284d4de749@mail.gmail.com> (raw)
In-Reply-To: <48C78246.7050507@gmail.com>
On Wed, Sep 10, 2008 at 1:16 AM, Hamid R. Jahanjou
<hamid.jahanjou@gmail.com> wrote:
> I agree. As you said, we have two conflicting requirements here: on the
> one hand one likes to swap as many pages as to satisfy the backing
> storage "proper block IO size," on the other hand, one should not make a
> process lose too many pages.
I'd much rather that one process lose a lot of pages than many
processes lose a few. When a system is swap thrashing, each process
has some of its active working set tossed to swap, which means *any*
application you try to switch to is then sluggish. If it were only one
application, then only that one takes the penalty hit when the user
switches focus and context.
next prev parent reply other threads:[~2008-09-10 17:08 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-04 12:04 Hamid R. Jahanjou
2008-09-04 23:14 ` Rik van Riel
2008-09-04 23:14 ` Andrew Morton
2008-09-05 7:45 ` Hamid R. Jahanjou
2008-09-05 6:58 ` Andrew Morton
2008-09-05 9:19 ` Andi Kleen
2008-09-05 20:27 ` Hamid R. Jahanjou
2008-09-05 19:45 ` Andi Kleen
2008-09-06 5:42 ` Rik van Riel
2008-09-08 0:28 ` Zan Lynx
2008-09-08 0:55 ` Rik van Riel
2008-09-10 8:16 ` Hamid R. Jahanjou
2008-09-10 17:08 ` Ray Lee [this message]
2008-09-10 17:39 ` Rik van Riel
2008-09-08 3:50 ` Li Yu
2008-09-08 9:51 ` hamidreza jahanjou
[not found] ` <48C4FECF.2000708@gmail.com>
2008-09-08 10:31 ` Li Yu
2008-09-24 13:56 ` Luiz Fernando N. Capitulino
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