4GB installed - RH reports 3.2?!?

Smith, Albert Albert.Smith at genexservices.com
Wed Sep 21 13:46:59 UTC 2005


> -----Original Message-----
> From: redhat-list-bounces at redhat.com 
> [mailto:redhat-list-bounces at redhat.com] On Behalf Of Smith, Albert
> Sent: Wednesday, September 21, 2005 9:42 AM
> To: General Red Hat Linux discussion list
> Subject: RE: 4GB installed - RH reports 3.2?!?
> 
> 
> 
>  
> 
> > -----Original Message-----
> > From: redhat-list-bounces at redhat.com
> > [mailto:redhat-list-bounces at redhat.com] On Behalf Of Cannon, Andrew
> > Sent: Wednesday, September 21, 2005 9:17 AM
> > To: Redhat (E-mail)
> > Subject: 4GB installed - RH reports 3.2?!?
> > 
> > Hi All,
> > 
> > Thanks to those of you who responded with answers to my 
> query on the 
> > mouse problem.  I managed to get it sorted by going all the way 
> > through the first boot process and it "miraculously" worked 
> fine after 
> > booting.  I have to say though, using a GUI with no mouse 
> isn't fun!!!
> > 
> > Anyway, now to my problem, we have a HP xw4300 with 4GB memory 
> > installed.
> > The system performs a memory check upon boot up (the first boot 
> > reported a CMOS checksum error).  It does a "click" on every 1MB of 
> > memory until it passes 3.3GB, then the checks change to 
> every 4MB, up 
> > until 4GB is reached (well, 4096MB).
> > 
> > The BIOS reports 4096 (in 4 x 1GB sticks) when I check it.
> > 
> > Red Hat (Enterprise linux 3 Update 5 WS) reports only 3290744 
> > installed memory, both when I use top, free and even in the boot 
> > messages.
> > 
> > Does Red Hat not recognise the full 4GB memory?
> > 
> > We are using the 2.4.21-32EL kernel for x86-64 on a P4 650 
> (2Mb cache,
> > 3.4GHz)
> > 
> > Any help would be greatly appreciated.
> > 
> > Andy
> > 
> > 
> > 
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> 
> What does /proc/meminfo report?
> 
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Andy,

  I would use the hugemem kernel that should hopefully fix your problem.
It sounds like with your current kernel PAE is not enabled. 

Albert Smith
Sr. Unix Systems Administrator
HPCSA, RHCT  
Genex Services
440 E. Swedesford Rd.
Wayne, PA 19087
albert.smith at genexservices.com
(610) 964-5154






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