[gentoo-user] Gentoo not detecting full amount of memory

[gentoo-user] Gentoo not detecting full amount of memory

[Mark Shields]

I recently got my home server back up and running after the power
supply went out.  I put some more memory in it, and it shows up fine
as 1048576 KB (1 gigabyte).  Gentoo, however, is only showing it as
904336 KB (883.14 MB) .  I'm curious as to why it's not detecting
140.86 MB.  Originally the server had a 512mb stick of generic PC2700
memory; I put 2 sticks of 256 MB (Mushkin, PC3200).  The FSB is set to
133 mhz and cpu/mem ratio is set 1:1 (Athlon XP 2400+ for the
processor).  It's running in a dual channel memory config.

mark@laeb ~ $ cat /proc/meminfo | grep Mem
MemTotal:       904336 kB
MemFree:         91224 kB

Any ideas?
-- 
- Mark Shields

-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Gentoo not detecting full amount of memory

[Colin]

On Jul 24, 2005, at 3:46 PM, Mark Shields wrote:

> I recently got my home server back up and running after the power
> supply went out.  I put some more memory in it, and it shows up fine
> as 1048576 KB (1 gigabyte).  Gentoo, however, is only showing it as
> 904336 KB (883.14 MB) .  I'm curious as to why it's not detecting
> 140.86 MB.  Originally the server had a 512mb stick of generic PC2700
> memory; I put 2 sticks of 256 MB (Mushkin, PC3200).  The FSB is set to
> 133 mhz and cpu/mem ratio is set 1:1 (Athlon XP 2400+ for the
> processor).  It's running in a dual channel memory config.
>
> mark@laeb ~ $ cat /proc/meminfo | grep Mem
> MemTotal:       904336 kB
> MemFree:         91224 kB
>
> Any ideas?

Hm, now this is a toughie.  Barring any BIOS misconfigurations, I'd  
say that you might have a defective stick of RAM.  Try booting  
another OS and see if it can detect the full gigabyte;  if it happens  
then it's probably a hardware problem, not a Gentoo issue.
--
Colin
-- 
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Re: [gentoo-user] Gentoo not detecting full amount of memory

[Kai Ole Schultz]

On Sunday 24 07 2005 21:46 Mark Shields wrote:
> I put some more memory in it, and it shows up fine
> as 1048576 KB (1 gigabyte).  Gentoo, however, is only showing it as
> 904336 KB (883.14 MB) .

Did you enable high Memory Support in your kernel?

HTH
Kai Ole Schultz
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Re: [gentoo-user] Gentoo not detecting full amount of memory

[Mark Shields]

No I do not, as I was under the impression it's not required unless
you have at least 4gb (sorry for the poor formatting, copying from
putty/terminal to a text box doesn't format very well):

Linux Kernel v2.6.11-gentoo-r6 Configuration
 ──────────────────────────────────────────────────────────────────────────────


     ┌─────────────────────── 
High Memory Support
 ────────────────────────┐
     │  Use the arrow keys to navigate this window or press the hotkey of │
     │  the item you wish to select followed by the <SPACE BAR>. Press    │
     │  <?> for additional information about this option.                 │
     │ ┌────────────────────────────────────────────────────────────────┐ │
     │ │                            (X) off                             │ │
     │ │                            ( ) 4GB                             │ │
     │ │                            ( ) 64GB                            │ │
     │ │                                                                │ │
     │ │                                                                │ │
     │ │                                                                │ │
     │ └────────────────────────────────────────────────────────────────┘ │
     ├────────────────────────────────────────────────────────────────────┤
     │                       <Select>      < Help >                       │
     └────────────────────────────────────────────────────────────────────┘

All 3 memory sticks appear fine.  The motherboard is an A7N8X Deluxe,
my main PC has an A7N8X-E Deluxe; both of them are capable of using
3gb of memory, 1gb per stick (3 slots for memory).  The 2 x 256 mb
sticks came from my main PC which I upgraded with 2 x 512mb sticks.
The 512mb stick has been in use by the server for 4 months. I could
understand if it was possible that they're incompatible, but then it
wouldn't show a gig of RAM when the PC shows the bios screen.
Regardless, I'll run memtest86 overnight to be sure.  I'll also see
what an ubuntu or knoppix livecd shows.





On 7/24/05, Kai Ole Schultz <k.o.schultz@gmx.net> wrote:
> On Sunday 24 07 2005 21:46 Mark Shields wrote:
> > I put some more memory in it, and it shows up fine
> > as 1048576 KB (1 gigabyte).  Gentoo, however, is only showing it as
> > 904336 KB (883.14 MB) .
> 
> Did you enable high Memory Support in your kernel?
> 
> HTH
> Kai Ole Schultz
> --
> gentoo-user@gentoo.org mailing list
> 
> 


-- 
- Mark Shields

-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Gentoo not detecting full amount of memory

[Jarry]

Mark Shields wrote:
> No I do not, as I was under the impression it's not required unless
> you have at least 4gb (sorry for the poor formatting, copying from
> putty/terminal to a text box doesn't format very well):

Actually, help says:

  CONFIG_NOHIGHMEM: 

 > If you are compiling a kernel which will never run on a machine with
 > more than 1 Gigabyte total physical RAM, answer "off" here

It looks to me, that up to 1GB (including) the answer should be "off".
But maybe boundary condition is not correctly defined, and for exactly
1GB it is necessary to select CONFIG_NOHIGHMEM = "4GB"...

Jarry
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Re: [gentoo-user] Gentoo not detecting full amount of memory

[Neil Bothwick]

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On Sun, 24 Jul 2005 22:38:24 +0200, Jarry wrote:

> Actually, help says:
> 
>   CONFIG_NOHIGHMEM: 
> 
>  > If you are compiling a kernel which will never run on a machine with
>  > more than 1 Gigabyte total physical RAM, answer "off" here
> 
> It looks to me, that up to 1GB (including) the answer should be "off".
> But maybe boundary condition is not correctly defined, and for exactly
> 1GB it is necessary to select CONFIG_NOHIGHMEM = "4GB"...

Keep reading, the next paragraph says

   If the machine has between 1 and 4 Gigabytes physical RAM,
   then answer "4GB" here.

The wording is ambiguous, both apply to a 1GB machine. The first should
say "1GB or more" instead of "more than 1GB".


-- 
Neil Bothwick

Bugs are Sons of Glitches

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Re: [gentoo-user] Gentoo not detecting full amount of memory

[Rudmer van Dijk]

On Sunday 24 July 2005 22:21, Mark Shields wrote:
> No I do not, as I was under the impression it's not required unless
> you have at least 4gb (sorry for the poor formatting, copying from
> putty/terminal to a text box doesn't format very well):

well the -mm kernel does not have this option anymore, but IIRC you need to 
select 4G support to enable the rest of your memory. 

> Linux Kernel v2.6.11-gentoo-r6 Configuration
>      ┌───────────────────────
> High Memory Support
>  ────────────────────────┐
>      │  Use the arrow keys to navigate this window or press the hotkey of │
>      │  the item you wish to select followed by the <SPACE BAR>. Press    │
>      │  <?> for additional information about this option.                 │
>      │ ┌────────────────────────────────────────────────────────────────┐ │
>      │ │                            (X) off                             │ │
>      │ │                            ( ) 4GB                             │ │
>      │ │                            ( ) 64GB                            │ │
>      │ │                                                                │ │
>      │ │                                                                │ │
>      │ │                                                                │ │
>      │ └────────────────────────────────────────────────────────────────┘ │
>      ├────────────────────────────────────────────────────────────────────┤
>      │                       <Select>      < Help >                       │
>      └────────────────────────────────────────────────────────────────────┘

did you read the help asociated with each item?

> All 3 memory sticks appear fine.  The motherboard is an A7N8X Deluxe,
> my main PC has an A7N8X-E Deluxe; both of them are capable of using
> 3gb of memory, 1gb per stick (3 slots for memory).  The 2 x 256 mb
> sticks came from my main PC which I upgraded with 2 x 512mb sticks.
> The 512mb stick has been in use by the server for 4 months. I could
> understand if it was possible that they're incompatible, but then it
> wouldn't show a gig of RAM when the PC shows the bios screen.
> Regardless, I'll run memtest86 overnight to be sure.  I'll also see
> what an ubuntu or knoppix livecd shows.

I'm sure you will not see any hardware failures, it has something todo with 
the split user/kernel that you only see ~800MB of ram.

enable highmem support for 4G and you will be able to use all of your memory.

	Rudmer

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gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Gentoo not detecting full amount of memory

[Mark Shields]

mark@laeb ~ $ cat /proc/meminfo | grep Mem
MemTotal:      1034284 kB
MemFree:        953172 kB


Thanks for the tip.  But strangely, 12mb is still missing.

On 7/24/05, Rudmer van Dijk <rudmer@legolas.dynup.net> wrote:
> On Sunday 24 July 2005 22:21, Mark Shields wrote:
> > No I do not, as I was under the impression it's not required unless
> > you have at least 4gb (sorry for the poor formatting, copying from
> > putty/terminal to a text box doesn't format very well):
> 
> well the -mm kernel does not have this option anymore, but IIRC you need to
> select 4G support to enable the rest of your memory.
> 
> > Linux Kernel v2.6.11-gentoo-r6 Configuration
> >      ┌───────────────────────
> > High Memory Support
> >  ────────────────────────┐
> >      │  Use the arrow keys to navigate this window or press the hotkey of │
> >      │  the item you wish to select followed by the <SPACE BAR>. Press    │
> >      │  <?> for additional information about this option.                 │
> >      │ ┌────────────────────────────────────────────────────────────────┐ │
> >      │ │                            (X) off                             │ │
> >      │ │                            ( ) 4GB                             │ │
> >      │ │                            ( ) 64GB                            │ │
> >      │ │                                                                │ │
> >      │ │                                                                │ │
> >      │ │                                                                │ │
> >      │ └────────────────────────────────────────────────────────────────┘ │
> >      ├────────────────────────────────────────────────────────────────────┤
> >      │                       <Select>      < Help >                       │
> >      └────────────────────────────────────────────────────────────────────┘
> 
> did you read the help asociated with each item?
> 
> > All 3 memory sticks appear fine.  The motherboard is an A7N8X Deluxe,
> > my main PC has an A7N8X-E Deluxe; both of them are capable of using
> > 3gb of memory, 1gb per stick (3 slots for memory).  The 2 x 256 mb
> > sticks came from my main PC which I upgraded with 2 x 512mb sticks.
> > The 512mb stick has been in use by the server for 4 months. I could
> > understand if it was possible that they're incompatible, but then it
> > wouldn't show a gig of RAM when the PC shows the bios screen.
> > Regardless, I'll run memtest86 overnight to be sure.  I'll also see
> > what an ubuntu or knoppix livecd shows.
> 
> I'm sure you will not see any hardware failures, it has something todo with
> the split user/kernel that you only see ~800MB of ram.
> 
> enable highmem support for 4G and you will be able to use all of your memory.
> 
>         Rudmer
> 
> --
> gentoo-user@gentoo.org mailing list
> 
> 


-- 
- Mark Shields

-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Gentoo not detecting full amount of memory

[Richard Fish]

Mark Shields wrote:

>mark@laeb ~ $ cat /proc/meminfo | grep Mem
>MemTotal:      1034284 kB
>MemFree:        953172 kB
>
>
>Thanks for the tip.  But strangely, 12mb is still missing.
>  
>

I am pretty sure this is actually correct, and depends upon your BIOS 
options.  All of those "cache this or that ROM into memory" options eat 
some some ram.  You can disable those to try and get some more memory, 
but your system performance will probably suffer overall.

-Richard

-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Gentoo not detecting full amount of memory

[Colin]

On Jul 24, 2005, at 5:04 PM, Richard Fish wrote:

> Mark Shields wrote:
>
>
>> mark@laeb ~ $ cat /proc/meminfo | grep Mem
>> MemTotal:      1034284 kB
>> MemFree:        953172 kB
>>
>>
>> Thanks for the tip.  But strangely, 12mb is still missing.
>>
>>
>
> I am pretty sure this is actually correct, and depends upon your  
> BIOS options.  All of those "cache this or that ROM into memory"  
> options eat some some ram.  You can disable those to try and get  
> some more memory, but your system performance will probably suffer  
> overall.

Modern operating system like Linux 2.6 and WinXP bypass the BIOS  
after the initial bootup, so caching the system/video BIOSes is just  
a waste of memory if you're using Gentoo.  Caching video RAM was nice  
back in the days of ISA video cards, but with PCI/AGP/PCI-X video  
cards, shut off that option.
--
Colin
-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Gentoo not detecting full amount of memory

[Mark Shields]

I'm fairly sure those options are disabled by default (I think).  No
way to check from my work though (ssh-enabled BIOS, or BIOS
configurable from linux, would be nice).

On 7/24/05, Colin <signofzeta@gmail.com> wrote:
<snip>

> Modern operating system like Linux 2.6 and WinXP bypass the BIOS
> after the initial bootup, so caching the system/video BIOSes is just
> a waste of memory if you're using Gentoo.  Caching video RAM was nice
> back in the days of ISA video cards, but with PCI/AGP/PCI-X video
> cards, shut off that option.
> --
> Colin
> --
> gentoo-user@gentoo.org mailing list
> 
> 


-- 
- Mark Shields

-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Gentoo not detecting full amount of memory

[Matt Nordhoff]

Colin wrote:
> 
> On Jul 24, 2005, at 5:04 PM, Richard Fish wrote:
> 
>> Mark Shields wrote:
>>
>>
>>> mark@laeb ~ $ cat /proc/meminfo | grep Mem
>>> MemTotal:      1034284 kB
>>> MemFree:        953172 kB
>>>
>>>
>>> Thanks for the tip.  But strangely, 12mb is still missing.
>>>
>>>
>>
>> I am pretty sure this is actually correct, and depends upon your BIOS 
>> options.  All of those "cache this or that ROM into memory" options 
>> eat some some ram.  You can disable those to try and get some more 
>> memory, but your system performance will probably suffer overall.
> 
> Modern operating system like Linux 2.6 and WinXP bypass the BIOS after 
> the initial bootup, so caching the system/video BIOSes is just a waste 
> of memory if you're using Gentoo.  Caching video RAM was nice back in 
> the days of ISA video cards, but with PCI/AGP/PCI-X video cards, shut 
> off that option.

Just to point out, PCI Express is abbreviated "PCIe". PCI-X is a 
different thing.
-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Gentoo not detecting full amount of memory

[Rudmer van Dijk]

On Sunday 24 July 2005 22:52, Mark Shields wrote:
> mark@laeb ~ $ cat /proc/meminfo | grep Mem
> MemTotal:      1034284 kB
> MemFree:        953172 kB
>
> Thanks for the tip.  But strangely, 12mb is still missing.

that's better than here:

rudmer:~ # cat /proc/meminfo | grep Mem
MemTotal:      1026304 kB
MemFree:         79152 kB

that's almost 22MB...
and that's what Richard already said probably a BIOS setting which you 
shouldn't try to disable to get a couple of MB's more.

	Rudmer
-- 
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Re: [gentoo-user] Gentoo not detecting full amount of memory

[Tim Igoe]

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Rudmer van Dijk wrote:
> On Sunday 24 July 2005 22:52, Mark Shields wrote:
> 
>>mark@laeb ~ $ cat /proc/meminfo | grep Mem
>>MemTotal:      1034284 kB
>>MemFree:        953172 kB
>>
>>Thanks for the tip.  But strangely, 12mb is still missing.
> 

Could it be shared ram taken for an on board graphics card?

I know the one in this box used to be anywhere from 4MB to 64MB iirc -
replaced it with a seperate board now.

> 
> that's better than here:
> 
> rudmer:~ # cat /proc/meminfo | grep Mem
> MemTotal:      1026304 kB
> MemFree:         79152 kB
> 
> that's almost 22MB...
> and that's what Richard already said probably a BIOS setting which you 
> shouldn't try to disable to get a couple of MB's more.
> 
> 	Rudmer

-- 
Tim Igoe
tim@igoe.me.uk
http://tim.igoe.me.uk - Personal Site
http://tv.igoe.me.uk - UK TV Guide

"Computers are like Air-con, open windows and they stop working!"

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Re: [gentoo-user] Gentoo not detecting full amount of memory

[Mark Shields]

Negative.  I'm using a Geforce 4 MX 440 64mb card, and the motherboard
doesn't come with onboard video.

On 7/24/05, Tim Igoe <tim@igoe.me.uk> wrote:
> 
> 
> Rudmer van Dijk wrote:
> > On Sunday 24 July 2005 22:52, Mark Shields wrote:
> >
> >>mark@laeb ~ $ cat /proc/meminfo | grep Mem
> >>MemTotal:      1034284 kB
> >>MemFree:        953172 kB
> >>
> >>Thanks for the tip.  But strangely, 12mb is still missing.
> >
> 
> Could it be shared ram taken for an on board graphics card?
> 
> I know the one in this box used to be anywhere from 4MB to 64MB iirc -
> replaced it with a seperate board now.
> 
> >
> > that's better than here:
> >
> > rudmer:~ # cat /proc/meminfo | grep Mem
> > MemTotal:      1026304 kB
> > MemFree:         79152 kB
> >
> > that's almost 22MB...
> > and that's what Richard already said probably a BIOS setting which you
> > shouldn't try to disable to get a couple of MB's more.
> >
> >       Rudmer
> 
> --
> Tim Igoe
> tim@igoe.me.uk
> http://tim.igoe.me.uk - Personal Site
> http://tv.igoe.me.uk - UK TV Guide
> 
> "Computers are like Air-con, open windows and they stop working!"
> 
> 
> 


-- 
- Mark Shields

-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Gentoo not detecting full amount of memory

[Daniel Drake]

Hi,

Mark Shields wrote:
> mark@laeb ~ $ cat /proc/meminfo | grep Mem
> MemTotal:      1034284 kB
> MemFree:        953172 kB
> 
> 
> Thanks for the tip.  But strangely, 12mb is still missing.

That sounds perfectly normal. The kernel usually secures 10-20mb RAM for 
itself, which isn't available to the rest of the system.

Daniel
-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Gentoo not detecting full amount of memory

[Mark Shields]

Ah, I wasn't aware, but that's a perfectly plausible explanation.

On 7/24/05, Daniel Drake <dsd@gentoo.org> wrote:
> Hi,
> 
> Mark Shields wrote:
> > mark@laeb ~ $ cat /proc/meminfo | grep Mem
> > MemTotal:      1034284 kB
> > MemFree:        953172 kB
> >
> >
> > Thanks for the tip.  But strangely, 12mb is still missing.
> 
> That sounds perfectly normal. The kernel usually secures 10-20mb RAM for
> itself, which isn't available to the rest of the system.
> 
> Daniel
> --
> gentoo-user@gentoo.org mailing list
> 
> 


-- 
- Mark Shields

-- 
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[gentoo-user] Re: Gentoo not detecting full amount of memory

[Sven Köhler]

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> No I do not, as I was under the impression it's not required unless
> you have at least 4gb (sorry for the poor formatting, copying from
> putty/terminal to a text box doesn't format very well):
> 
> Linux Kernel v2.6.11-gentoo-r6 Configuration
>  ──────────────────────────────────────────────────────────────────────────────
> 
> 
>      ┌─────────────────────── 
> High Memory Support
>  ────────────────────────┐
>      │  Use the arrow keys to navigate this window or press the hotkey of │
>      │  the item you wish to select followed by the <SPACE BAR>. Press    │
>      │  <?> for additional information about this option.                 │
>      │ ┌────────────────────────────────────────────────────────────────┐ │
>      │ │                            (X) off                             │ │
>      │ │                            ( ) 4GB                             │ │
>      │ │                            ( ) 64GB                            │ │
>      │ │                                                                │ │
>      │ │                                                                │ │
>      │ │                                                                │ │
>      │ └────────────────────────────────────────────────────────────────┘ │
>      ├────────────────────────────────────────────────────────────────────┤
>      │                       <Select>      < Help >                       │
>      └────────────────────────────────────────────────────────────────────┘

You definetly have to say "4GB" here. The Linux Kernel (Gentoo is not
responsible for detecting your RAM) will otherwise not access all RAM
available. Usually, if you execute "dmesg" the first lines talks about
LOWMEM and HIGHMEM. On a machine with 1GB of RAM, it will usually read
like that:

750MB LOWMEM
150MB HIGHMEM

Using "off" will result in something like that:

750MB LOWMEM
0MB HIGHMEM

which is what you're experiencing.


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Re: [gentoo-user] Gentoo not detecting full amount of memory

[Rumen Yotov]

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Mark Shields wrote:

>I recently got my home server back up and running after the power
>supply went out. I put some more memory in it, and it shows up fine
>as 1048576 KB (1 gigabyte). Gentoo, however, is only showing it as
>904336 KB (883.14 MB) . I'm curious as to why it's not detecting
>140.86 MB. Originally the server had a 512mb stick of generic PC2700
>memory; I put 2 sticks of 256 MB (Mushkin, PC3200). The FSB is set to
>133 mhz and cpu/mem ratio is set 1:1 (Athlon XP 2400+ for the
>processor). It's running in a dual channel memory config.
>
>mark@laeb ~ $ cat /proc/meminfo | grep Mem
>MemTotal: 904336 kB
>MemFree: 91224 kB
>
>Any ideas?

Hi,
There's an option in kernel-config to enable the remaining memory you
have. Check it.
HTH. Rumen


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Re: [gentoo-user] Gentoo not detecting full amount of memory

[Neil Bothwick]

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On Sun, 24 Jul 2005 15:46:10 -0400, Mark Shields wrote:

> I recently got my home server back up and running after the power
> supply went out.  I put some more memory in it, and it shows up fine
> as 1048576 KB (1 gigabyte).  Gentoo, however, is only showing it as
> 904336 KB (883.14 MB) . 

You need to set CONFIG_HIGHMEM4G=y in your kernel config.


-- 
Neil Bothwick

Bookmark - A means of returning to where you got lost last time.

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[gentoo-user] Re: Gentoo not detecting full amount of memory

[Thomas Kirchner]

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* On Jul 24 15:46, Mark Shields (gentoo-user@lists.gentoo.org) wrote:
> Any ideas?

All the comments about enabling 4G highmem are correct - the kernel can't 
address a full gig without it.  However, enabling this slightly slows 
down your memory, and some people choose to keep it off for speed unless 
they're using the full gig.  Another option, better imho, is to use a 
kernel with the 1g_lowmem patch (originally from -ck patchset) or to 
patch it in yourself, which enables exactly 1 gig of memory at full 
speed.

The patch for kernel 2.6.12 is available here:
http://ck.kolivas.org/patches/2.6/2.6.12/2.6.12-ck3/patches/1g_lowmem1_i386.diff
If you need it for a different kernel version, start here:
http://ck.kolivas.org/patches/2.6/
Tom

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Re: [gentoo-user] Re: Gentoo not detecting full amount of memory

[Tero Grundström]

On Sun, 24 Jul 2005, Thomas Kirchner wrote:

> * On Jul 24 15:46, Mark Shields (gentoo-user@lists.gentoo.org) wrote:
>> Any ideas?
>
> All the comments about enabling 4G highmem are correct - the kernel can't
> address a full gig without it.  However, enabling this slightly slows
> down your memory, and some people choose to keep it off for speed unless
> they're using the full gig.  Another option, better imho, is to use a
> kernel with the 1g_lowmem patch (originally from -ck patchset) or to
> patch it in yourself, which enables exactly 1 gig of memory at full
> speed.
>
> The patch for kernel 2.6.12 is available here:
> http://ck.kolivas.org/patches/2.6/2.6.12/2.6.12-ck3/patches/1g_lowmem1_i386.diff
> If you need it for a different kernel version, start here:
> http://ck.kolivas.org/patches/2.6/
> Tom

He could also emerge ck-sources, which include the full ck patchset and
genpatches base.

I've been using them for about a year now on my desktop machine. In my
experience, and according to the ck mailing-list, the patches are very 
stable these days.

There is also a server version of the patchset. To get this with emerge 
you have to enable the 'ck-server' USE flag.

Kernel patch homepage of Con Kolivas:
http://members.optusnet.com.au/ckolivas/kernel/

--
T.G.
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Re: [gentoo-user] Gentoo not detecting full amount of memory

[Brett I. Holcomb]

Did you build the kernel with high memory?

On Sun, 24 Jul 2005, Mark Shields wrote:

> I recently got my home server back up and running after the power
> supply went out.  I put some more memory in it, and it shows up fine
> as 1048576 KB (1 gigabyte).  Gentoo, however, is only showing it as
> 904336 KB (883.14 MB) .  I'm curious as to why it's not detecting
> 140.86 MB.  Originally the server had a 512mb stick of generic PC2700
> memory; I put 2 sticks of 256 MB (Mushkin, PC3200).  The FSB is set to
> 133 mhz and cpu/mem ratio is set 1:1 (Athlon XP 2400+ for the
> processor).  It's running in a dual channel memory config.
>
> mark@laeb ~ $ cat /proc/meminfo | grep Mem
> MemTotal:       904336 kB
> MemFree:         91224 kB
>
> Any ideas?
>

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Brett I. Holcomb
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Re: [gentoo-user] Gentoo not detecting full amount of memory

[Mark Shields]

17 minutes ago, yes.

On 7/24/05, Brett I. Holcomb <brettholcomb@bellsouth.net> wrote:
> Did you build the kernel with high memory?
>  <snip>

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Re: [gentoo-user] Gentoo not detecting full amount of memory

[Mark Shields]

I'm fairly sure those options are disabled by default (I think).

On 7/24/05, Mark Shields <laebshade@gmail.com> wrote:
> 17 minutes ago, yes.
> 
> On 7/24/05, Brett I. Holcomb <brettholcomb@bellsouth.net> wrote:
> > Did you build the kernel with high memory?
> >  <snip>
> 


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