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Date: Thu, 08 Oct 2009 19:15:09 -0600 From: Robert Hancock <hancockrwd@...il.com> To: Andreas <andreas2@...ic.univie.ac.at> CC: linux-kernel@...r.kernel.org Subject: Re: Allocated Mem - 700MB missing 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. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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