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Old 10-01-2004, 06:08 PM   #1
ekaqu
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Registered: Sep 2004
Distribution: Debian SID, Debian Woody, Debian Sarge
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linux doesnt see all the ram i have


I have 2 sticks of 512kb of ram in my computer, windows picks it up as being 1 gig, my bios picks it up as 1 gig, linux picks it up as being 884mbs of ram. why does linux find less ram? I am using debian unstable.


is what i see with free:

ekaqu@debian:~$ free -m
total used free shared buffers cached
Mem: 884 809 74 0 124 364
-/+ buffers/cache: 320 563
Swap: 611 8 603

is what i see with top:

Mem: 905332k total, 829604k used, 75728k free, 127468k buffers
Swap: 626524k total, 8244k used, 618280k free, 373340k cached
 
Old 10-01-2004, 06:18 PM   #2
amosf
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Have you tried enabling High Memory Support? (ie 4GB)

Does it see all mem when the kernel is compiled with the High Memory Support option?
 
Old 10-01-2004, 06:21 PM   #3
ekaqu
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im still using the kernel that came with the install (2.4.36) and i dont know if high memory support is on it, how would i check?
 
Old 10-01-2004, 06:35 PM   #4
amosf
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Probably not with the default kernel, tho easy to add in when you compile the kernel...
 
Old 10-01-2004, 07:56 PM   #5
J.W.
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This article does a good job of explaining this phenomenon. -- J.W.
 
  


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