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Linux - Laptop and Netbook Having a problem installing or configuring Linux on your laptop? Need help running Linux on your netbook? This forum is for you. This forum is for any topics relating to Linux and either traditional laptops or netbooks (such as the Asus EEE PC, Everex CloudBook or MSI Wind).

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Old 04-26-2009, 06:36 AM   #1
maikki
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Memory consuption


Hi all

I have debian lenny on my notebook installed. I have 1024MB RAM, but when I use cat /proc/meminfo I've got still info about around 22MB memory free. Is this OK. I tried to run QEMU but it always freeze my computer. Is it possible I need to upgrade my memory??
 
Old 04-26-2009, 06:39 AM   #2
linus72
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damn-1GB RAM and Lenny's maxing it out-?
Did you try "free -m"?
There's something fishy there....
 
Old 04-26-2009, 07:32 AM   #3
repo
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Depends what you are running at the moment.
Try a lightweight windowmanager.
2Gb RAM is also a must if you are running 1 or more virtual machines.

Last edited by repo; 04-26-2009 at 07:40 AM.
 
Old 04-26-2009, 07:42 AM   #4
jhwilliams
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Quote:
Originally Posted by maikki View Post
Hi all

I have debian lenny on my notebook installed. I have 1024MB RAM, but when I use cat /proc/meminfo I've got still info about around 22MB memory free. Is this OK. I tried to run QEMU but it always freeze my computer. Is it possible I need to upgrade my memory??
IMPORTANT.

The meminfo file and the free command report values that do not necessarily reflect reality. Linux maintains a memory cache and this is reflected in the used memory values. So, if your computer runs straight for 20 days, memory usage should be almost 100%. Make sure you're reporting the right value. For example:

Code:
jameson@sage:~$ free -m
             total       used       free     shared    buffers     cached
Mem:          3025       1684       1340          0        329        992
-/+ buffers/cache:        363       2662
Swap:         8283          0       8283

Here it appears I'm using 1.68G of memory -- however, 1.3 of that is cache data. 363M is all that is being used by memory resident apps.


All the same, Firefox and an Xgl/Compiz X process can nearly hit 1GB alone! (I'm half joking here.) If I were you, I'd upgrade to 2G. I have 4G on my laptop because I don't want to worry about silly things like this! Doing very little, Intrepid is using up 1.4G for me right now. Modern GNU/Linux systems aren't a joke!

Last edited by jhwilliams; 04-26-2009 at 07:44 AM.
 
  


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