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I have an Ubuntu laptop with 16GB of physical RAM. However most of the time only 4.5GB are utilized. Are there any configurations I can make to allow or encourage the system to consume more RAM seeing as that should be a good thing?

Any input is much appreciated.

Thanks in advance!

  • You can move some partitions like /tmp to ram. That's all you can do. – Pilot6 Aug 10 '15 at 12:51
  • I recall reading about a system setting called "swapiness" in some Debian-based Linux distros; I'm not certain it's defined in Ubuntu, and I don't recall how to change it (and I'm at work on a Windows machine at present). Effectively, swapiness affects how eager the OS is to load code and data from RAM to /swap -- setting with 16 GB RAM, you might be able to set it all the way to zero, or turn off swap entirely. – Zeiss Ikon Aug 10 '15 at 12:54
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You can not get Ubuntu use more RAM that it is needed for the system and applications. Actually you do not need so much RAM, unless you use virtual machines or some specific applications.

You can utilize your RAM to create temporary partitions. That may speed up your system.

Look at this answer for guides.

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