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Old 04-17-2006, 03:10 PM   #1
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Question FC5, the memory black hole

Hi everybody. I'm a newbie so blame me if you think so.

I've been using FC5 for a couple of days and it's fantastic. I found most of the answers to my problems here, but there's still one I don't understand very well. How is it possible to FC to be a hole to my phisical memory? I've got 1GB of RAM and the damn thing is using about 96% of it!!

According to Kinfocenter (now):
- Application data: 13%
- Cache: 76%
- Free: 7%

I see the problem is related to that Cache, but what is it? can I disable? I disabled some services thinking that could be the source of the problem, but I guess it wasn't.

BTW, I've got my system up to date (yum update) so... any ideas?

Thanks in advance!
Old 04-17-2006, 04:03 PM   #2
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Linux is not windows. I think that it is normal for Linux to grab hold of all of the memory to actually use it instead of swapping to the HD like windows does. With 1GB or RAM you will probably never touch any swap partition that you have. That means things go real fast instead of having to read from the HD.
Old 04-17-2006, 04:06 PM   #3
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Steps to memory related happiness on Linux:

1) Don't worry about it.

That's it.

The cache is RAM that Linux is using to speed up access to files on disk. If it's needed by an application it will instantly be made available.

Check the output of 'free'. The number on the '-/+ buffers/cache:' line under 'used' is what's being used (in KB) by applications.


Last edited by ilikejam; 04-17-2006 at 04:10 PM.
Old 04-17-2006, 04:30 PM   #4
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Ok, thanks for your fast answers. Yep, I haven't used to the way Penguins think :-P



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