Ram usage

Hello,

I know its common for the Linux Kernel to use quite a bit of available ram to cache content..... but is it normal for it to cache 1.4GB of ram?

here is a live graph of my memory usage:

http://lucy.tlm-project.org/info/

wouldn't have even thought there was 1.4GB worth of data to cache in the first place

 

 

 

 

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