linux-kernel - Re: LowFree/LowMem problem

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Message-ID: <82e4877d0801210845i4909ff04wef3fb5f985e8cbc1@mail.gmail.com>
Date:	Mon, 21 Jan 2008 11:45:04 -0500
From:	"Parag Warudkar" <parag.warudkar@...il.com>
To:	Matthias.Wolle@....de
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: LowFree/LowMem problem

Matthias Wolle <Matthias.Wolle <at> gmx.de> writes:

>
> Hi,
>
> my company is running several servers with kernel 2.6.23.12.  This are Dual
> Quad Core servers (CPU Intel) with 16GB RAM using a 32Bit kernel.

This is a common problem with running 32-bit kernels with more than 8Gb RAM.
(Search the archives and you will find similar problem reports.)

Anyone in your situation has two options - Preferred one is to switch
to a 64-bit kernel. In most cases you can just upgrade the kernel to
64-bits and use the same 32-bit userspace. It works fine.

If you cannot for some reason upgrade to a 64-bit kernel, the second
option is to try and use RHEL/CentOS kernels which according to Alan
Cox are better tuned for this kind of setup and you have a better
chance that they will work.

HTH

Parag
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