From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Horst von Brand <vonbrand@inf.utfsm.cl>
Cc: Jeff Garzik <jgarzik@pobox.com>, Andrew Morton <akpm@osdl.org>,
brettspamacct@fastclick.com, linux-kernel@vger.kernel.org
Subject: Re: ~500 megs cached yet 2.6.5 goes into swap hell
Date: Fri, 30 Apr 2004 15:15:50 +1000 [thread overview]
Message-ID: <4091E106.5030906@yahoo.com.au> (raw)
In-Reply-To: <200404292001.i3TK1BYe005147@eeyore.valparaiso.cl>
Horst von Brand wrote:
> Nick Piggin <nickpiggin@yahoo.com.au> said:
>
> [...]
>
>
>>I don't know. What if you have some huge application that only
>>runs once per day for 10 minutes? Do you want it to be consuming
>>100MB of your memory for the other 23 hours and 50 minutes for
>>no good reason?
>
>
> How on earth is the kernel supposed to know that for this one particular
> job you don't care if it takes 3 hours instead of 10 minutes, just because
> you don't want to spare enough preciousss RAM?
It doesn't know that.
But if you restrict this guy's working set to a tiny amount
and just allow it to thrash away, then if nothing else, all
that wasted disk IO will slow all your other stuff down too.
However that is something we can allow you to tune, via RSS
limits. I am maintaining Rik's patch for that and will send
it on when rmap optimisation work is more finalised.
next prev parent reply other threads:[~2004-04-30 5:15 UTC|newest]
Thread overview: 128+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-28 21:27 ~500 megs cached yet 2.6.5 goes into swap hell Brett E.
2004-04-29 0:01 ` Andrew Morton
2004-04-29 0:10 ` Jeff Garzik
2004-04-29 0:21 ` Nick Piggin
2004-04-29 0:50 ` Wakko Warner
2004-04-29 0:53 ` Jeff Garzik
2004-04-29 0:54 ` Nick Piggin
2004-04-29 1:51 ` Tim Connors
2004-04-29 21:45 ` Denis Vlasenko
2004-04-29 0:58 ` Marc Singer
2004-04-29 3:48 ` Nick Piggin
2004-04-29 4:20 ` Marc Singer
2004-04-29 4:26 ` Nick Piggin
2004-04-29 14:49 ` Marc Singer
2004-04-30 4:08 ` Nick Piggin
2004-04-30 22:31 ` Marc Singer
2004-04-29 6:38 ` William Lee Irwin III
2004-04-29 7:36 ` Russell King
2004-04-29 10:44 ` Nick Piggin
2004-04-29 11:04 ` Russell King
2004-04-29 14:52 ` Marc Singer
2004-04-29 20:01 ` Horst von Brand
2004-04-29 20:18 ` Martin J. Bligh
2004-04-29 20:33 ` David B. Stevens
2004-04-29 22:42 ` Steve Youngs
2004-04-29 20:36 ` Paul Jackson
2004-04-29 21:19 ` Andrew Morton
2004-04-29 21:34 ` Paul Jackson
2004-04-29 21:57 ` Andrew Morton
2004-04-29 22:18 ` Paul Jackson
2004-04-30 0:04 ` Andy Isaacson
2004-04-30 0:32 ` Andrew Morton
2004-04-30 0:54 ` Paul Jackson
2004-04-30 5:38 ` Andy Isaacson
2004-04-30 6:00 ` Nick Piggin
2004-04-30 7:52 ` Jeff Garzik
2004-04-30 8:02 ` Andrew Morton
2004-04-30 8:09 ` Jeff Garzik
2004-05-06 13:08 ` Pavel Machek
2004-05-07 15:53 ` Hugh Dickins
2004-05-07 16:57 ` Pavel Machek
2004-05-07 17:30 ` Timothy Miller
2004-05-07 17:43 ` Hugh Dickins
2004-05-07 17:48 ` Mark Frazer
2004-05-12 17:52 ` Rob Landley
2004-05-17 20:16 ` Hugh Dickins
2004-04-29 21:38 ` Timothy Miller
2004-04-29 21:47 ` Paul Jackson
2004-04-29 22:18 ` Timothy Miller
2004-04-29 22:46 ` Paul Jackson
2004-04-29 23:08 ` Timothy Miller
2004-04-30 12:31 ` Bart Samwel
2004-04-30 15:35 ` Clay Haapala
2004-04-30 15:44 ` Bart Samwel
2004-04-30 22:11 ` Paul Jackson
2004-04-30 3:37 ` Tim Connors
2004-04-30 5:15 ` Nick Piggin [this message]
2004-04-30 6:20 ` Tim Connors
2004-04-30 6:34 ` Nick Piggin
2004-04-30 7:05 ` Tim Connors
2004-04-30 7:15 ` Nick Piggin
2004-04-30 9:18 ` Re[2]: " vda
2004-04-30 9:33 ` Arjan van de Ven
2004-04-30 11:33 ` Denis Vlasenko
2004-04-30 16:19 ` Timothy Miller
2004-04-29 0:49 ` Brett E.
2004-04-29 1:00 ` Andrew Morton
2004-04-29 1:24 ` Jeff Garzik
2004-04-29 1:40 ` Andrew Morton
2004-04-29 1:47 ` Rik van Riel
2004-04-29 18:14 ` Adam Kropelin
2004-04-30 3:17 ` Tim Connors
2004-04-29 2:19 ` Tim Connors
2004-04-29 16:24 ` Martin J. Bligh
2004-04-29 16:36 ` Chris Friesen
2004-04-29 16:56 ` Martin J. Bligh
2004-04-29 1:30 ` Paul Mackerras
2004-04-29 1:31 ` Paul Mackerras
2004-04-29 1:53 ` Andrew Morton
2004-04-29 2:40 ` Andrew Morton
2004-04-29 2:58 ` Paul Mackerras
2004-04-29 3:09 ` Andrew Morton
2004-04-29 3:14 ` William Lee Irwin III
2004-04-29 6:12 ` Benjamin Herrenschmidt
2004-04-29 6:22 ` Andrew Morton
2004-04-29 6:25 ` Benjamin Herrenschmidt
2004-04-29 6:31 ` William Lee Irwin III
2004-04-29 16:50 ` Martin J. Bligh
2004-04-29 3:57 ` Nick Piggin
2004-04-29 14:29 ` Rik van Riel
2004-04-30 3:00 ` Nick Piggin
2004-04-30 12:50 ` Rik van Riel
2004-04-30 13:07 ` Nick Piggin
2004-04-30 13:18 ` Nikita Danilov
2004-04-30 13:39 ` Nick Piggin
2004-04-29 1:46 ` Rik van Riel
2004-04-29 1:57 ` Andrew Morton
2004-04-29 2:29 ` Marc Singer
2004-04-29 2:35 ` Andrew Morton
2004-04-29 3:10 ` Marc Singer
2004-04-29 3:19 ` Andrew Morton
2004-04-29 4:13 ` Marc Singer
2004-04-29 4:33 ` Andrew Morton
2004-04-29 14:45 ` Marc Singer
2004-04-29 16:51 ` Andy Isaacson
2004-04-29 20:42 ` Andrew Morton
2004-04-29 22:27 ` Andy Isaacson
2004-04-29 23:19 ` Andrew Morton
2004-04-30 0:14 ` Lincoln Dale
2004-04-29 8:02 ` Wichert Akkerman
2004-04-29 14:25 ` Marcelo Tosatti
2004-04-29 14:27 ` Wichert Akkerman
2004-04-29 2:41 ` Rik van Riel
2004-04-29 2:43 ` Andrew Morton
2004-04-29 1:41 ` Tim Connors
2004-04-29 9:43 ` Helge Hafting
2004-04-29 14:48 ` Marc Singer
2004-04-29 0:44 ` Brett E.
2004-04-29 1:13 ` Andrew Morton
2004-04-29 1:29 ` Brett E.
2004-04-29 18:05 ` Brett E.
2004-04-29 18:32 ` William Lee Irwin III
2004-04-29 20:47 ` Brett E.
2004-04-29 0:04 ` Brett E.
2004-04-29 0:13 ` Jeff Garzik
2004-04-29 0:43 ` Nick Piggin
2004-04-29 13:51 ` Horst von Brand
2004-04-29 18:32 ` Brett E.
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