Re: [PATCH] Add Kconfig option for default swappiness

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From: Ben Gamari <bgamari.foss@gmail.com>
To: Hiroyuki Kamezawa <kamezawa.hiroyuki@gmail.com>
Cc: David Rientjes <rientjes@google.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Jesper Juhl <jj@chaosbits.net>,
	Wu Fengguang <fengguang.wu@intel.com>
Subject: Re: [PATCH] Add Kconfig option for default swappiness
Date: Wed, 03 Nov 2010 22:44:11 -0400	[thread overview]
Message-ID: <87eib1byf8.fsf@gmail.com> (raw)
In-Reply-To: <AANLkTimDPdDHAg0Odp0WchOLKh3OUSOWX7_0ps8eizFk@mail.gmail.com>

On Tue, 2 Nov 2010 23:34:27 +0900, Hiroyuki Kamezawa <kamezawa.hiroyuki@gmail.com> wrote:
> Hmm, then, can't we add a sysctl template config/script for generic
> sysctl values ?
>
That is one idea. Unfortunately, then we have something of a dependency
on out of tree userspace utilities.

> Adding this kind of CONFIG one by one seems not very helpful...
> 
This was definitely a concern of mine as well. In principle, a
distribution might want to tune any of the knobs in /proc/sys, so I
agree that adding them to Kconfig is a bit of a poor path to go down.
That being said, swappiness is an especially important tunable.

- Ben

WARNING: multiple messages have this Message-ID (diff)

From: Ben Gamari <bgamari.foss@gmail.com>
To: Hiroyuki Kamezawa <kamezawa.hiroyuki@gmail.com>
Cc: David Rientjes <rientjes@google.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Jesper Juhl <jj@chaosbits.net>,
	Wu Fengguang <fengguang.wu@intel.com>
Subject: Re: [PATCH] Add Kconfig option for default swappiness
Date: Wed, 03 Nov 2010 22:44:11 -0400	[thread overview]
Message-ID: <87eib1byf8.fsf@gmail.com> (raw)
In-Reply-To: <AANLkTimDPdDHAg0Odp0WchOLKh3OUSOWX7_0ps8eizFk@mail.gmail.com>

On Tue, 2 Nov 2010 23:34:27 +0900, Hiroyuki Kamezawa <kamezawa.hiroyuki@gmail.com> wrote:
> Hmm, then, can't we add a sysctl template config/script for generic
> sysctl values ?
>
That is one idea. Unfortunately, then we have something of a dependency
on out of tree userspace utilities.

> Adding this kind of CONFIG one by one seems not very helpful...
> 
This was definitely a concern of mine as well. In principle, a
distribution might want to tune any of the knobs in /proc/sys, so I
agree that adding them to Kconfig is a bit of a poor path to go down.
That being said, swappiness is an especially important tunable.

- Ben

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next prev parent reply	other threads:[~2010-11-04  2:44 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-02  3:20 [PATCH] Add Kconfig option for default swappiness Ben Gamari
2010-11-02  3:20 ` Ben Gamari
2010-11-02  3:33 ` David Rientjes
2010-11-02  3:33   ` David Rientjes
2010-11-02 12:58   ` Ben Gamari
2010-11-02 12:58     ` Ben Gamari
2010-11-02 14:01     ` Wu Fengguang
2010-11-02 14:01       ` Wu Fengguang
2010-11-03 14:33       ` Dave Jones
2010-11-03 14:33         ` Dave Jones
2010-11-04  2:40         ` Ben Gamari
2010-11-04  2:40           ` Ben Gamari
2010-11-04  3:09       ` Ben Gamari
2010-11-04  3:09         ` Ben Gamari
2010-11-02 14:34     ` Hiroyuki Kamezawa
2010-11-02 14:34       ` Hiroyuki Kamezawa
2010-11-04  2:44       ` Ben Gamari [this message]
2010-11-04  2:44         ` Ben Gamari
2010-11-02 19:39     ` David Rientjes
2010-11-02 19:39       ` David Rientjes
2010-11-04  3:13       ` Ben Gamari
2010-11-04  3:13         ` Ben Gamari
2010-11-02  4:14 ` Jesper Juhl
2010-11-02  4:14   ` Jesper Juhl
2010-11-02  4:27 ` Minchan Kim
2010-11-02  4:27   ` Minchan Kim
2010-11-02 12:47   ` Hiroyuki Kamezawa
2010-11-02 12:47     ` Hiroyuki Kamezawa

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