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Old 03-27-2005, 04:30 PM   #1
cdavidson
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Question What's hogging all my memory?


I've got FC3 running on a Dell Optiplex GX260, P4 2.4GHz, 768MB memory. I know that this should more than suffice for running just about any OS, but since I recently installed FC3, I've noticed that I don't have as much free memory as I should. This is the output of free:

total used free shared buffers cached
Mem: 767264 754404 12860 0 188052 182688
-/+ buffers/cache: 383664 383600
Swap: 1540088 224 1539864

This was taken with Firefox, Evolution, and a Terminal running. I've been trying to investigate and find out what is hogging the memory but when I issue a ps ax | more, there is not a column for %MEM (or something similar) displayed. How can I find out what is taking all the resources? Thanks in advance...
 
Old 03-27-2005, 04:32 PM   #2
Komakino
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Linux will often show all the memory as being in use, that's just the way it works.
 
Old 03-27-2005, 04:35 PM   #3
whansard
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Most of the memory is being used by disk cache, and will be given to any program that needs it.
 
Old 03-27-2005, 05:44 PM   #4
heema
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there is a program in kde called ksysguard that is like the task manager in windows
 
Old 03-27-2005, 09:59 PM   #5
J.W.
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You can use the "top" command (no quotes) to display the processes that are consuming the most resources.

Also, this article does a great job explaining the basics of Linux Memory Management, and why so much RAM seems to be in use all the time. -- J.W.
 
Old 03-29-2005, 03:15 PM   #6
runlevel0
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Re: What's hogging all my memory?

Quote:
Originally posted by cdavidson
I've been trying to investigate and find out what is hogging the memory but when I issue a ps ax | more, there is not a column for %MEM (or something similar) displayed. How can I find out what is taking all the resources? Thanks in advance...
There is an easy way to see if a process is hogging mem: fire up top in an xterm and watch the mem% column.
If you want a bit less output press 'i' to filter out all the idle processes.

If you find a culprit of mem-hogging you can kill it with "k" and the PID.

Top is IMHO a must-know, one of those simple and powerful console based apps which makes the difference.

Last edited by runlevel0; 03-29-2005 at 03:34 PM.
 
  


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