Where did the RAM go ..

Steve Tempest Steve.Tempest at gts.apn.com.au
Mon Jun 28 21:19:45 CDT 2010

What result do you get when you grep dmesg...

[root at mysql2 ~]# dmesg | grep Memory
Memory: 16427860k/17825792k available (2573k kernel code, 344108k reserved, 1305k data, 212k init)
[root at mysql2 ~]# cat /proc/meminfo | grep Mem
MemTotal:     16432000 kB
MemFree:       6439996 kB
[root at mysql2 ~]# free
             total       used       free     shared    buffers     cached
Mem:      16432000    9991996    6440004          0     414376    8943528
-/+ buffers/cache:     634092   15797908
Swap:      2031608          0    2031608
[root at mysql2 ~]# free -m
             total       used       free     shared    buffers     cached
Mem:         16046       9766       6280          0        404       8734
-/+ buffers/cache:        627      15419
Swap:         1983          0       1983
[root at mysql2 ~]# omreport system summary | grep "Total Installed Capacity"
Total Installed Capacity   : 16384  MB
[root at mysql2 ~]# omreport system summary | grep "Memory Available to the OS"
Memory Available to the OS : 16044  MB
[root at mysql2 ~]#


Steve Tempest
System Administrator - Output Systems
APN Group Technology Services
54 Pioneer Road, Yandina Qld Australia 4561
P: +61 7 5454 7956 M: 0439 545 412 
F: +61 7 5472 8281
E: steve.tempest at gts.apn.com.au 
W: www.apn.com.au

-----Original Message-----
From: linux-poweredge-bounces at dell.com [mailto:linux-poweredge-bounces at dell.com] On Behalf Of Mark Watts
Sent: Monday, 28 June 2010 11:04 PM
To: Nick Lunt
Cc: linux-poweredge at dell.com
Subject: RE: Where did the RAM go ..

On Mon, 2010-06-28 at 13:42 +0100, Nick Lunt wrote:

> 64 Bit server -
> # arch
> x86_64
> # uname -r
> 2.6.18-92.el5


I see a similar issue on 32bit, PAE, RHEL 5.3, on a PowerEdge 6650.

Attributes : Total Installed Capacity
Value      : 16384  MB

Attributes : Total Installed Capacity Available to the OS
Value      : 15992  MB

392MB "missing" in this case.

Google doesn't turn up much, although I suspect in my case its related to being a 32bit kernel.


Mark Watts BSc RHCE MBCS
Senior Systems Engineer, Managed Services Manpower www.QinetiQ.com QinetiQ - Delivering customer-focused solutions GPG Key: http://www.linux-corner.info/mwatts.gpg



This email and any attachments are strictly confidential and subject to copyright.  They may
contain privileged information.  If you are not the intended recipient please delete the message 
and notify the sender. You should not read, copy, use, change, alter or disclose this email or 
its attachments without authorisation.  The company and any related or associated companies do 
not accept any liability in connection with this email and any attachments including in connection 
with computer viruses, data corruption, delay, interruption, unauthorised access or unauthorised 
amendment. Any views expressed in this email and any attachments do not necessarily reflect the 
views of the company or the views of any of our related or associated companies.

More information about the Linux-PowerEdge mailing list