What is using all this memory?

[NoOp]

On 06/03/2012 03:31 AM, Dotan Cohen wrote:
> After logging into Kubuntu 12.04 64 bit and not starting any programs,
> almost all the computer's memory is taken, and the system is swapping:
> 
>  - antares:~$ free
>              total       used       free     shared    buffers     cached
> Mem:       2050400    1947624     102776          0       5264     151796
> -/+ buffers/cache:    1790564     259836
> Swap:      2928636     749760    2178876
> 
> Top does not show anything unusual. The user's home directory is not
> encrypted. I have disabled Akonadi and Nepomuk. What else should I
> check?

Try:
$ ps aux | awk '$11!~/\[*\]/ {print $6/1024" Mb --> "$11,$12,$13,$14}' |
sort -g
(all one line of course)
or
$ ps ax -o rss,cmd --sort rss

Courtesy:
<http://www.commandlinefu.com/commands/view/10476/what-the-hell-is-running-on-easily-snoop-your-systems-ram-consumption>

For virtual memory:

$ sudo apt-get install memstat
$ memstat

And if you'd like to see the virtual memory assigned to the memory hog
shown in ps, just get the pid first & then run memstat. Example:

$ ps x | grep desktop
$ 2259? Sl 0:05 /usr/bin/plasma-desktop
$ memstat -p 2259

http://manpages.ubuntu.com/manpages/precise/man1/memstat.1.html
$ info /usr/share/doc/memstat/memstat-tutorial.txt.gz

You can also use vmstat for virtual memory:
http://manpages.ubuntu.com/manpages/precise/man8/vmstat.8.html
And a nice write up on how to use it:
<http://www.linuxjournal.com/article/8178>
[Monitoring Virtual Memory with vmstat]

This may also be of help:
<http://tldp.org/LDP/tlk/mm/memory.html>
[Chapter 3
Memory Management]

Gary