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3

How can I use up all RAM by cache?

rated 0 times [ 3] [ 0] / answers: 1 / hits: 1605 / 3 Years ago, wed, november 3, 2021, 7:02:06

I am using Ubuntu 12.10 with 4G RAM. I have changed SWAP to 10 and installed Preload. However, My system only use less than 1G RAM to cache and It remains more than 2G RAM standby.

How can I use up all RAM by cache? By this, I want to speed up open and run applications.

Thank you.

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answered 3 Years ago zebrla · Accepted Answer

Don't worry about that. The cache optimizations run in the Linux kernel and trust me, when it becomes necessary to cache the data, it will be cached. Run the system for a few days and see what then happens.

Also note that the system has not precognitive powers and it can hardly cache your whole hard disk, so when you run a program for the first time, it will not be cached.

If you find yourself with too much free RAM on your hands and a specific application that relies on ultra low access and read times, you can always construct a RAM-disk. Normally, it is hardly worth an effort.