From: Robert Love <rml@tech9.net>
To: Szakacsits Szabolcs <szaka@sienet.hu>
Cc: root@chaos.analogic.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] strict VM overcommit for stock 2.4
Date: 19 Jul 2002 11:06:33 -0700 [thread overview]
Message-ID: <1027101993.1116.199.camel@sinai> (raw)
In-Reply-To: <Pine.LNX.4.30.0207190843200.30902-100000@divine.city.tvnet.hu>
On Fri, 2002-07-19 at 00:30, Szakacsits Szabolcs wrote:
> *However* distinguishing root and non-root users also in strict VM
> overcommit would make a significant difference for general purpose
> systems, this was always my point.
>
> Can you see the non-orthogonality now?
Nope, I still disagree and there is no point going back and forth.
We both agree that there are situations where both resource accounting
(or some sort of root-protection like you want) and strict overcommit is
required.
I contend there are situations where only one or the other is needed.
More importantly, I argue the two things should be kept separate.
Putting some root safety net into strict accounting is a hack (how much
of a net? etc.). You want to keep users from ruining things - get
per-user resource limits. You want to keep the machine from
overcommiting memory and thus not OOMing? Get strict accounting. You
want both? Use both.
I provided the first piece.
Robert Love
WARNING: multiple messages have this Message-ID (diff)
From: Robert Love <rml@tech9.net>
To: Szakacsits Szabolcs <szaka@sienet.hu>
Cc: root@chaos.analogic.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] strict VM overcommit for stock 2.4
Date: 19 Jul 2002 11:06:33 -0700 [thread overview]
Message-ID: <1027101993.1116.199.camel@sinai> (raw)
In-Reply-To: <Pine.LNX.4.30.0207190843200.30902-100000@divine.city.tvnet.hu>
On Fri, 2002-07-19 at 00:30, Szakacsits Szabolcs wrote:
> *However* distinguishing root and non-root users also in strict VM
> overcommit would make a significant difference for general purpose
> systems, this was always my point.
>
> Can you see the non-orthogonality now?
Nope, I still disagree and there is no point going back and forth.
We both agree that there are situations where both resource accounting
(or some sort of root-protection like you want) and strict overcommit is
required.
I contend there are situations where only one or the other is needed.
More importantly, I argue the two things should be kept separate.
Putting some root safety net into strict accounting is a hack (how much
of a net? etc.). You want to keep users from ruining things - get
per-user resource limits. You want to keep the machine from
overcommiting memory and thus not OOMing? Get strict accounting. You
want both? Use both.
I provided the first piece.
Robert Love
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next prev parent reply other threads:[~2002-07-19 18:03 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-11 22:28 [PATCH] strict VM overcommit Robert Love
2002-07-12 17:30 ` [PATCH] strict VM overcommit for stock 2.4 Robert Love
2002-07-12 17:30 ` Robert Love
2002-07-18 15:22 ` Szakacsits Szabolcs
2002-07-18 15:22 ` Szakacsits Szabolcs
2002-07-18 16:31 ` Robert Love
2002-07-18 16:31 ` Robert Love
2002-07-18 16:36 ` Szakacsits Szabolcs
2002-07-18 16:36 ` Szakacsits Szabolcs
2002-07-18 17:42 ` Robert Love
2002-07-18 17:42 ` Robert Love
2002-07-18 17:25 ` Szakacsits Szabolcs
2002-07-18 17:25 ` Szakacsits Szabolcs
2002-07-18 17:31 ` Szakacsits Szabolcs
2002-07-18 17:31 ` Szakacsits Szabolcs
2002-07-18 18:32 ` Robert Love
2002-07-18 18:32 ` Robert Love
2002-07-18 19:58 ` Alan Cox
2002-07-18 19:58 ` Alan Cox
2002-07-18 18:01 ` Szakacsits Szabolcs
2002-07-18 18:01 ` Szakacsits Szabolcs
2002-07-18 18:52 ` Robert Love
2002-07-18 18:52 ` Robert Love
2002-07-18 20:52 ` Alan Cox
2002-07-18 20:52 ` Alan Cox
2002-07-19 6:17 ` Szakacsits Szabolcs
2002-07-19 6:17 ` Szakacsits Szabolcs
2002-07-18 22:22 ` Rik van Riel
2002-07-18 22:22 ` Rik van Riel
2002-07-19 7:47 ` Szakacsits Szabolcs
2002-07-19 7:47 ` Szakacsits Szabolcs
2002-07-18 18:28 ` Robert Love
2002-07-18 18:28 ` Robert Love
2002-07-18 17:50 ` Szakacsits Szabolcs
2002-07-18 17:50 ` Szakacsits Szabolcs
2002-07-18 19:25 ` stoffel
2002-07-18 19:25 ` stoffel
2002-07-19 5:52 ` Szakacsits Szabolcs
2002-07-19 5:52 ` Szakacsits Szabolcs
2002-07-18 18:56 ` Richard B. Johnson
2002-07-18 18:56 ` Richard B. Johnson
2002-07-18 19:03 ` Robert Love
2002-07-18 19:03 ` Robert Love
2002-07-18 19:19 ` Richard B. Johnson
2002-07-18 19:19 ` Richard B. Johnson
2002-07-18 19:22 ` Robert Love
2002-07-18 19:22 ` Robert Love
2002-07-18 20:49 ` Alan Cox
2002-07-18 20:49 ` Alan Cox
2002-07-19 16:49 ` Amit Shah
2002-07-19 17:16 ` Robert Love
2002-07-20 5:02 ` Amit Shah
2002-07-18 19:10 ` Robert Love
2002-07-18 19:10 ` Robert Love
2002-07-18 19:35 ` Richard B. Johnson
2002-07-18 19:35 ` Richard B. Johnson
2002-07-18 19:41 ` Daniel Gryniewicz
2002-07-18 19:41 ` Daniel Gryniewicz
2002-07-18 20:23 ` Richard B. Johnson
2002-07-18 20:23 ` Richard B. Johnson
2002-07-18 20:43 ` Daniel Gryniewicz
2002-07-18 20:43 ` Daniel Gryniewicz
2002-07-19 7:30 ` Szakacsits Szabolcs
2002-07-19 7:30 ` Szakacsits Szabolcs
2002-07-19 18:06 ` Robert Love [this message]
2002-07-19 18:06 ` Robert Love
2002-07-18 22:24 ` Rik van Riel
2002-07-18 22:24 ` Rik van Riel
2002-07-18 22:30 ` Robert Love
2002-07-18 22:30 ` Robert Love
2002-07-18 22:08 ` [PATCH] strict VM overcommit Adrian Bunk
2002-07-18 22:27 ` Robert Love
2002-07-19 11:02 ` Adrian Bunk
2002-07-20 0:32 ` Alan Cox
2002-07-21 9:10 ` Szakacsits Szabolcs
2002-07-21 13:32 ` Alan Cox
2002-07-21 12:46 ` Adrian Bunk
2002-07-21 14:33 ` Jos Hulzink
2002-07-22 0:43 ` Thunder from the hill
2002-07-21 16:46 ` Alan Cox
2002-07-21 15:23 ` Szakacsits Szabolcs
2002-07-21 19:01 ` Alan Cox
2002-07-22 8:08 ` Szakacsits Szabolcs
2002-07-22 13:00 ` Alan Cox
2002-07-22 12:45 ` Hugh Dickins
2002-07-22 14:01 ` Alan Cox
2002-07-22 1:12 ` Thunder from the hill
2002-07-22 8:03 ` Szakacsits Szabolcs
2002-07-22 10:23 ` Thunder from the hill
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