From: Nagy Tibor <nagyt@otpbank.hu>
To: linux-kernel@vger.kernel.org
Subject: HIGHMEM
Date: Tue, 15 Apr 2003 16:39:30 +0200 [thread overview]
Message-ID: <3E9C19A2.1040206@dell633.otpefo.com> (raw)
Hi,
We have two Dell Poweredge servers, an older one (PowerEdge 6300) and a
newer one (PowerEdge 6400). Both servers have 4GB RAM, but the Linux
kernel uses about 500MB less memory in the newer machine.
See /var/log/boot.msg on the old one:
<4>Linux version 2.4.20 (root@dell632) (gcc version 2.95.3 20010315
(SuSE)) #4 SMP Fri Jan 10 12:07:00 CET 2003
<6>BIOS-provided physical RAM map:
<4> BIOS-e820: 0000000000000000 - 00000000000a0000 (usable)
<4> BIOS-e820: 0000000000100000 - 00000000fbffe000 (usable)
<4> BIOS-e820: 00000000fbffe000 - 00000000fc000000 (reserved)
<4> BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
<4> BIOS-e820: 00000000fee00000 - 00000000fee10000 (reserved)
<4> BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
<5>3135MB HIGHMEM available.
<5>896MB LOWMEM available.
and on the new one:
<4>Linux version 2.4.20 (root@alfa) (gcc version 2.95.3 20010315 (SuSE))
#10 SMP Fri Mar 28 15:40:45 CET 2003
<6>BIOS-provided physical RAM map:
<4> BIOS-e820: 0000000000000000 - 00000000000a0000 (usable)
<4> BIOS-e820: 0000000000100000 - 00000000dfff0000 (usable)
<4> BIOS-e820: 00000000dfff0000 - 00000000dfffec00 (ACPI data)
<4> BIOS-e820: 00000000dfffec00 - 00000000dffff000 (reserved)
<4> BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
<4> BIOS-e820: 00000000fee00000 - 00000000fee10000 (reserved)
<4> BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
<5>2687MB HIGHMEM available.
<5>896MB LOWMEM available.
There is a big hole between 00000000dffff000 and 00000000fec00000, which
is not used on the new machine. What can I do?
Thanks for your help.
Tibor
------------------------------------------------------------------------
Tibor Nagy
E-mail: nagyt@otpbank.hu
------------------------------------------------------------------------
next reply other threads:[~2003-04-15 14:29 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-15 14:39 Nagy Tibor [this message]
2003-04-15 15:14 ` HIGHMEM William Lee Irwin III
2003-04-15 16:03 ` HIGHMEM Samuel Flory
2004-02-13 12:20 HIGHMEM Nagy Tibor
2004-02-13 13:12 ` HIGHMEM Sean Neakums
2004-02-13 16:05 ` HIGHMEM Martin J. Bligh
2004-02-13 22:09 ` HIGHMEM Matt Domsch
2004-02-13 22:18 ` HIGHMEM Martin J. Bligh
2004-02-13 17:08 ` HIGHMEM david parsons
2004-02-13 13:36 ` HIGHMEM Matt Domsch
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