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Old 06-19-2007, 12:45 PM   #1
Executor21
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Registered: Nov 2006
Posts: 14

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Memory usage--what's going on?


While I've never had any problems with slowdowns on my Linux system because of this, this issue always confused me.

I'm running SuSe 10.1, KDE 3.5.1, on a 3GHz Intel CPU, with 1GB of memory (+ 4GB of swap memory).

Open applications:
Thunderbird
Opera
aMule (currently doing nothing)
Konqueror
OpenOffice.org (3 documents)

I'm the only user currently logged in.

And yet, the top command gives the following:
Code:
Mem:   1033888k total,  1009584k used,    24304k free,    82544k buffers
Swap:  4088500k total,       40k used,  4088460k free,   403656k cached
Where does the full 1GB of memory usage comes from? If this is right, I shouldn't be able to, say, play a video--which I know I can. So why does this say I'm using all this memory, and if I'm not really, how do I find out how much I'm really using?
 
Old 06-19-2007, 12:52 PM   #2
reddazz
LQ Guru
 
Registered: Nov 2003
Location: N. E. England
Distribution: Fedora, CentOS, Debian
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Take a look this article from the gentoo forums if you want to understand Linux memory management.
 
Old 06-19-2007, 12:56 PM   #3
acid_kewpie
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Registered: Jun 2001
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Distribution: Gentoo, RHEL, Fedora, Centos
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you'll find a thousand question slike this if you search and the answer is this is the linux full memory model. what's the point buying loads of ram if you don't get any use from it? linux stores old memory in ram in case it's needed later, that's basically where it goes.
 
  


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