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[Xen-users] Why my system only use 3.3G memory ?

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Why my system only use 3.3G memory ?
From: Tongjian <tongjian@xxxxxxxxxxxx>
Date: Thu, 07 Jul 2005 15:17:42 +0800
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Hi, all

I have a server used to install Xen-2.0.6 on CentOS 4.1 i386, hardware
is DELL 2850, dual Xeon 3.2G CPU, 6G memory, use myself custom
compiled xen kernel(dom0 and domU), i know xen 2.0 on i386 only use 4G
memory, but i found on my server, it's only use 3327M memory, whit's
problem, who can help me?

Here is some info.

[root@CentOS4 ~]#  xm info
system                 : Linux
host                   : CentOS4
release                : 2.6.11.10-xen0
version                : #3 Fri Jul 1 02:54:48 CST 2005
machine                : i686
cores                  : 2
hyperthreads_per_core  : 2
cpu_mhz                : 3192
memory                 : 3327
free_memory            : 2913


[root@CentOS4 ~]#  xm dmesg | less
ERROR: cannot use unconfigured serial port COM1
 __  __            ____    ___   __  
 \ \/ /___ _ __   |___ \  / _ \ / /_ 
  \  // _ \ '_ \    __) || | | | '_ \
  /  \  __/ | | |  / __/ | |_| | (_) |
 /_/\_\___|_| |_| |_____(_)___(_)___/
                                     
 http://www.cl.cam.ac.uk/netos/xen
 University of Cambridge Computer Laboratory

 Xen version 2.0.6 (tongjian@(none <mailto:tongjian@%28none>)) (gcc
version 3.4.3 20050227 (Red Hat 3.4.3-22.1)) Fri Jul  1 02:53:42 CST 2005
 Latest ChangeSet: information unavailable

(XEN) WARNING: Only the first 4GB of the physical memory map can be accessed
(XEN)          by Xen in 32-bit mode. Truncating the memory map...
(XEN) Physical RAM map:
(XEN)  0000000000000000 - 00000000000a0000 (usable)
(XEN)  0000000000100000 - 00000000cffc0000 (usable)
(XEN)  00000000cffc0000 - 00000000cffcfc00 (ACPI data)
(XEN)  00000000cffcfc00 - 00000000cffff000 (reserved)
(XEN)  00000000e0000000 - 00000000fec90000 (reserved)
(XEN)  00000000fed00000 - 00000000fed00400 (reserved)
(XEN)  00000000fee00000 - 00000000fee10000 (reserved)
(XEN)  00000000ffb00000 - 0000000100000000 (reserved)
(XEN) System RAM: 3327MB (3407232kB)
(XEN) Xen heap: 10MB (10680kB)
(XEN) CPU0: Before vendor init, caps: bfebfbff 20100000 00000000, vendor = 0
(XEN) CPU#0: Physical ID: 0, Logical ID: 0
(XEN) CPU caps: bfebfbff 20100000 00000000 00000000
(XEN) found SMP MP-table at 000fe710
(XEN) ACPI: RSDP (v000 DELL                                      ) @
0x000fd650
(XEN) ACPI: RSDT (v001 DELL   PE BKC   0x00000001 MSFT 0x0100000a) @
0x000fd664
(XEN) ACPI: FADT (v001 DELL   PE BKC   0x00000001 MSFT 0x0100000a) @
0x000fd6b0
(XEN) ACPI: MADT (v001 DELL   PE BKC   0x00000001 MSFT 0x0100000a) @
0x000fd724
(XEN) ACPI: SPCR (v001 DELL   PE BKC   0x00000001 MSFT 0x0100000a) @
0x000fd7cc
(XEN) ACPI: HPET (v001 DELL   PE BKC   0x00000001 MSFT 0x0100000a) @
0x000fd81c
(XEN) ACPI: MCFG (v001 DELL   PE BKC   0x00000001 MSFT 0x0100000a) @
0x000fd854
(XEN) ACPI: DSDT (v001 DELL   PE BKC   0x00000001 MSFT 0x0100000e) @
0x00000000
(XEN) ACPI: Local APIC address 0xfee00000
(XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
(XEN) Processor #0 Unknown CPU [15:4] APIC version 20
(XEN) ACPI: LAPIC (acpi_id[0x02] lapic_id[0x06] enabled)
(XEN) Processor #6 Unknown CPU [15:4] APIC version 20
(XEN) ACPI: LAPIC (acpi_id[0x03] lapic_id[0x01] enabled)
(XEN) Processor #1 Unknown CPU [15:4] APIC version 20
[root@CentOS4 ~]#

-- 


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