linux-kernel - Re: Small System Paging Problem

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Message-ID: <BLU103-DAV108D2CF484C615A66784ACD6750@phx.gbl>
Date:	Sun, 25 Nov 2007 22:28:03 -0700
From:	"Josh Goldsmith" <joshin@...mail.com>
To:	"Mikael Pettersson" <mikpe@...uu.se>,
	<linux-kernel@...r.kernel.org>
Subject: Re: Small System Paging Problem - OOM-killer goes nuts

Thanks for the response Mikael.

Is your 486 running a IDE disk on a normal interface or via USB?  I wonder 
if the NSLU2 only having I/O via USB might be significant.  Also, this is a 
2.6 kernel and I've seen spurious reports across the internet about similar 
oom-killer problems since about 2.6.7.

Thanks!
   -Josh

----- Original Message ----- 
From: "Mikael Pettersson" <mikpe@...uu.se>
To: <joshin@...mail.com>; <linux-kernel@...r.kernel.org>
Sent: Sunday, November 25, 2007 3:55 PM
Subject: Re: Small System Paging Problem - OOM-killer goes nuts


> I'm no VM tuning expert, but I have and still do heavy compile
> jobs on similarly configured machines, with no OOM problems:
>
> I regularly build 2.6 kernels and occasionally also gcc on a
> 100MHz 486 with 28MB of RAM and perhaps 500MB of swap. It runs
> a standard but stripped down Fedora Core 4 user-space, with ext3
> file systems and a kernel that doesn't include anything non-essential.
> The machine will swap madly, but the OOM killer never triggers.
> (All system settings are FC4 defaults. I haven't touched them.)
>
> In the past I did a fair amount of package rebuilds and test suite
> runs on an NSLU2 myself, with a 2.4 Linksys/Openslug kernel, ext3,
> and a 1GB or perhaps 2GB swap partition on a disk attached via a
> USB2-to-PATA enclosure. Even when swapping heavily the OOM killer
> wouldn't trigger.
> 

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