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tr3s 07-10-2011 08:27 PM
debian squeeze wrong RAM reading
 
Hi!

I'm running Debian 6 (squeeze) amd64 version and as I look on the total memory size, it only reads 3224184k but my machine actually has 4GB of RAM installed. What could be the issue?

Thanks

Elv13 07-10-2011 11:15 PM
It would be the right number if you use the 32bit version. You can enable more using the PAE kernel (bigmem). It is really the 64bit version, then it is something else. Use uname -a get see if your kernel is really 64bit.

tr3s 07-11-2011 03:14 AM
here's the reading:

Code:
# grep flags /proc/cpuinfo
flags                : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall lm constant_tsc pebs bts pni dtes64 monitor ds_cpl est cid cx16 xtpr pdcm lahf_lm
flags                : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall lm constant_tsc pebs bts pni dtes64 monitor ds_cpl est cid cx16 xtpr pdcm lahf_lm
Code:
#uname -a
Linux proxy 2.6.32-5-amd64 #1 SMP Tue Jun 14 09:42:28 UTC 2011 x86_64 GNU/Linux
Code:
#top
top - 16:11:32 up  5:55,  1 user,  load average: 0.00, 0.02, 0.00
Tasks: 209 total,  1 running, 208 sleeping,  0 stopped,  0 zombie
Cpu(s):  5.2%us,  1.5%sy,  0.0%ni, 91.5%id,  1.0%wa,  0.3%hi,  0.5%si,  0.0%st
Mem:  3224184k total,  2260780k used,  963404k free,  176412k buffers
i've no idea really

j1alu 07-11-2011 03:31 AM
I think if you have got a build-in graphics-card, the memory you miss is used for the graphics-card.
I got 4Gb too, and a build-in graphics, and i get shown this:
Code:
top - 10:29:27 up  2:06,  4 users,  load average: 0.55, 0.53, 0.93
Tasks: 108 total,  2 running, 104 sleeping,  0 stopped,  2 zombie
Cpu(s):  8.6%us,  4.3%sy,  0.0%ni, 86.0%id,  1.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:  3366292k total,  2116036k used,  1250256k free,    46576k buffers
Swap:        0k total,        0k used,        0k free,  1695772k cached

TobiSGD 07-11-2011 04:12 AM
It may also be possible that the needed memory remapping is simply not available from your BIOS or de-activated in the BIOS-settings. Please post manufacturer and model of your mainboard.

tr3s 07-11-2011 06:53 AM
Quote:
Originally Posted by j1alu (Post 4411329)
I think if you have got a build-in graphics-card, the memory you miss is used for the graphics-card.
I got 4Gb too, and a build-in graphics, and i get shown this:
Code:
top - 10:29:27 up  2:06,  4 users,  load average: 0.55, 0.53, 0.93
Tasks: 108 total,  2 running, 104 sleeping,  0 stopped,  2 zombie
Cpu(s):  8.6%us,  4.3%sy,  0.0%ni, 86.0%id,  1.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:  3366292k total,  2116036k used,  1250256k free,    46576k buffers
Swap:        0k total,        0k used,        0k free,  1695772k cached
I have a 512mb video expansion card.

Quote:
Originally Posted by TobiSGD (Post 4411349)
It may also be possible that the needed memory remapping is simply not available from your BIOS or de-activated in the BIOS-settings. Please post manufacturer and model of your mainboard.
my mobo: MSI 945P Neo5 (MS 7236 ver 2.5)

TobiSGD 07-11-2011 07:00 AM
Quote:
Originally Posted by tr3s (Post 4411492)
my mobo: MSI 945P Neo5 (MS 7236 ver 2.5)
This motherboard supports a maximum of 4GB RAM and the pictures of the BIOS in the handbook don't mention memory remapping functions, so I would assume that it doesn't support memory remapping.
In that case you have to just live with it.


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