[CentOS] CentOS 4.4 not seeing all RAM

[Rodrigo Barbosa]

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Correction: largesmp kernel, nor hugemem.

[]s

On Mon, Mar 05, 2007 at 02:04:06PM -0300, Rodrigo Barbosa wrote:
> Maybe the hugemem kernel ?
> 
> []s
> 
> On Mon, Mar 05, 2007 at 11:51:15AM -0500, Drew Weaver wrote:
> > Fedora has a PAE kernel which is useful in instances like this, what
> > would be the CentOS alternative to that?
> > 
> > -Drew 
> > 
> > -----Original Message-----
> > From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
> > Behalf Of Kanwar Ranbir Sandhu
> > Sent: Monday, March 05, 2007 11:47 AM
> > To: CentOS mailing list
> > Subject: [CentOS] CentOS 4.4 not seeing all RAM
> > 
> > Hi Everyone,
> > 
> > My server is only seeing 4.8 GB out of 6 GB available.  I don't know
> > why.
> > 
> > I have a CentOS 4.4 x86_64 server running on a Tyan s2895 with 6 GB of
> > RAM (two 1 GB sticks and 2 2 GB sticks).  I upgraded the RAM, powered up
> > the server, and when CentOS was finished booting, checked the available
> > RAM with free.   This is what it's reporting:
> > 
> >                  total           used            free     shared
> > buffers     cached
> > Mem:       4809064    4769492      39572          0     197156
> > 3127704
> > -/+ buffers/cache:    1444632    3364432
> > Swap:      2064376        176    2064200
> > 
> > The BIOS sees all of the RAM.  In fact, it looks to me like the kernel
> > knows 6 GB is available.  But, it is only using 4.8 GB because I see
> > this in dmesg:
> > 
> > Memory: 4808464k/6291456k available (2106k kernel code, 0k reserved,
> > 1299k data, 196k init)
> > 
> > What happened to the other 1 GB+ of RAM?
> > 
> > BTW, the server isn't running all the newest updates, but it is running
> > the latest CentOS 4 kernel (2.6.9-42.0.10.ELsmp).
> > 
> > Regards,
> > 
> > Ranbir
> > --
> > Kanwar Ranbir Sandhu
> > Linux 2.6.19-1.2911.fc6 i686 GNU/Linux
> > 11:39:08 up 2 days, 10:28, 2 users, load average: 1.18, 0.64, 0.60 
> > 
> > 
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> > CentOS at centos.org
> > http://lists.centos.org/mailman/listinfo/centos
> 
> -- 
> Rodrigo Barbosa
> "Quid quid Latine dictum sit, altum viditur"
> "Be excellent to each other ..." - Bill & Ted (Wyld Stallyns)
> 
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos

- -- 
Rodrigo Barbosa
"Quid quid Latine dictum sit, altum viditur"
"Be excellent to each other ..." - Bill & Ted (Wyld Stallyns)

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