Clear Memory Cache
I need to know how to manually clear out the unused cached files in the system memory. I have a 3.2GHz hex-core processor with 16GB of memory running Ubuntu 10.04 64-bit. I have the system monitor applet on the top panel of my screen with the important computer vitals: CPU, memory, network, HDD, and I also have the CPU temperature and temps of both hard drives.
I have noticed using this that the system cache in the memory slowly fills itself up and bogs the system down to a crawl. I have also noticed that when I copy/paste anything, a copy of the files moved stays in the cache and will quickly fill it up.
Yes, I know that Linux has excellent memory management. It just doesn't work for me. I want to be able to clear out anything that currently isn't in use, preferably using the command line.
I would also like to modify the policies regarding what the memory stores and how long it holds on to unused files if possible.
I'm including a link to a screenshot of my system monitor applet. The cache is represented by the red bar in the middle. This is its current state a few hours after resetting the system. I have a Virtual Box running which is hogging 4GB of the green memory.
Thank you.
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