From: Robert Hancock <hancockrwd@gmail.com>
To: Andreas <andreas2@logic.univie.ac.at>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Allocated Mem - 700MB missing
Date: Thu, 08 Oct 2009 19:15:09 -0600 [thread overview]
Message-ID: <4ACE8E9D.2040009@gmail.com> (raw)
In-Reply-To: <20091008175939.GA31126@logic.univie.ac.at>
On 10/08/2009 11:59 AM, Andreas wrote:
> Hi experts!
>
> Where are the missing 700MB ??? (4GB installed)
> 700 MB is too much, that can't be only because of version-differences!
>
> I compared (unmodified) stable/testing kernels with Xen and OpenVZ-kernel:
> all out of main debian packages:
>
> Only3200:
> ----------
> *Linux host 2.6.18-5-686 #1 SMP Mon Dec 24 16:41:07 UTC 2007 i686 GNU/Linux
> *Linux knoppix 2.6.24.4 #2 SMP PREEMPT Tue Mar 25 21:35:28 CET 2008 i686 GNU/Linux
> *Linux host 2.6.26-2-686 #1 SMP Sun Jun 21 04:57:38 UTC 2009 i686 GNU/Linux
>
>
> Full4GB:
> ---------
> *Linux host 2.6.26-2-openvz-686 #1 SMP Sun Jun 21 07:07:25 UTC 2009 i686 GNU/Linux
Check the kernel configuration. For 32-bit kernels you need
CONFIG_HIGHMEM64G enabled to use memory above 4GB (including in your
case, because of the PCI, etc. memory holes). Though it would be better
to use a 64-bit kernel.
prev parent reply other threads:[~2009-10-09 1:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-08 17:59 Allocated Mem - 700MB missing Andreas
2009-10-08 18:37 ` Maciej Rutecki
2009-10-09 1:15 ` Robert Hancock [this message]
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