what happen to my server's memory?

[networkone]

My server has a strange problem.
After running in 12 hours, it used up all my memory to 4G
I have to clear cache with command

echo 3 > /proc/sys/vm/drop_caches

And the server's memory is back to 500M. I can't figure why this happen? Can someone helps me please?

My server information:

Processor Name	Intel(R) Xeon(R) CPU E31220 @ 3.10GHz
Total Memory	4023652 kB
Free Memory	2245604 kB
Total Swap Memory	8193108 kB
Free Swap Memory	8192976 kB

Linux xxxxx.xxxx.xx 2.6.18-308.11.1.el5 #1 SMP Tue Jul 10 08:48:43 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux

 

[zEitEr]

Hello,

Check with this http://www.linuxatemyram.com/

 

[networkone]

Hello,

Check with this http://www.linuxatemyram.com/

Thanks zEitEr, so we do not panic or worry much about this situation, right?

But i don't understand in some ways, i have two servers, but only one has this kind of problem! why the other does not used up all memory like this one?