3 gb limit

I just finished install FC 6 on a Dell Poweredge 2950 with 2 dual core  
processors and 8 gb of RAM.  No problems.  Cleanest install in quite a  
while.  However, linux only sees 3 gb of memory.  free shows:
              total       used       free     shared    buffers     cached
Mem:       3369184    1381856    1987328          0     130380    1041488
-/+ buffers/cache:     209988    3159196
Swap:      2305316          0    2305316

On boot I see this:
kernel: 7269MB HIGHMEM available.
Jan  9 11:01:33 mail kernel: 727MB LOWMEM available.
So it looks like the kernel sees the memory, why doesnt it show up  
when I type the free command?

[Chris Mohler]

Are you using the PAE kernel?

Chris

No.  I just updated to the PAE kernel through yum.  Will that fix the  
issue?  I'll reboot the box and see.

Quoting Chris Mohler :
> Are you using the PAE kernel?
>
> Chris
>
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[Chris Mohler]

On 1/9/07, [e-mail]
 wrote:
> No.  I just updated to the PAE kernel through yum.  Will that fix the
> issue?  I'll reboot the box and see.
> From http://fedoraproject.org/wiki/Docs/Beats:

(Kernel Flavors)

kernel-PAE, for use in 32-bit x86 systems with > 4GB of RAM, or
with CPUs that have a 'NX (No eXecute)' feature. This kernel support
both uniprocessor and multi-processor systems.

Chris

That fixed it.  Is there any advantage in doing 64 bit for a mail server?

Quoting Chris Mohler :
> On 1/9/07, [e-mail]
>  wrote:
> > No.  I just updated to the PAE kernel through yum.  Will that fix the
> > issue?  I'll reboot the box and see.
> > From http://fedoraproject.org/wiki/Docs/Beats:
>
> (Kernel Flavors)
> kernel-PAE, for use in 32-bit x86 systems with > 4GB of RAM, or
>
> with CPUs that have a 'NX (No eXecute)' feature. This kernel support
> both uniprocessor and multi-processor systems.
>
> Chris
>
> -- 
> fedora-list mailing list
> [e-mail]
> To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list

[Chris Mohler]

On 1/9/07, [e-mail]
 wrote:
> That fixed it.  Is there any advantage in doing 64 bit for a mail server?

I'm not qualified to answer that one - but I'm sure someone else has
an opinion or two....

Chris

[Matthew Miller]

On Tue, Jan 09, 2007 at 07:50:41PM -0500, [e-mail] wrote:
> That fixed it.  Is there any advantage in doing 64 bit for a mail server?

Yes. You'll be able to access all of that memory in a straightforward way,
for starters.

But does sendmail, bogofilter, procmail, uw-imap, httpd, take  
advantage of the 64 bit enviroment or do they 'fall back' to 32 bit?

Quoting Matthew Miller :
> On Tue, Jan 09, 2007 at 07:50:41PM -0500,   
> [e-mail] wrote:
> > That fixed it.  Is there any advantage in doing 64 bit for a mail server?
>
> Yes. You'll be able to access all of that memory in a straightforward way,
> for starters.
>
> --
> Matthew Miller           [e-mail]          http://mattdm.org/
> Boston University Linux      ------>              http://linux.bu.edu/
>
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> fedora-list mailing list
> [e-mail]
> To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list

[Rick Stevens]

On Wed, 2007-01-10 at 06:45 -0500, [e-mail]
wrote:
> But does sendmail, bogofilter, procmail, uw-imap, httpd, take  
> advantage of the 64 bit enviroment or do they 'fall back' to 32 bit?

If you're using the 64-bit versions of them (e.g. you installed the
x86_64 version of Fedora), yes, they make use of the 64-bit environment.

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