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How to Increase Virtual Memory Size in Linux and Windows

 How to Increase Virtual Memory Size in Linux and Windows


For Linux:


Check if a swapfile is already active:

sudo swapon --show


Turn off and delete existing swapfile: 

sudo swapoff /swapfile

sudo rm /swapfile


Then proceed with recreating it:

sudo fallocate -l 4G /swapfile

sudo chmod 600 /swapfile

sudo mkswap /swapfile

sudo swapon /swapfile


Make it permanent (optional):

sudo nano /etc/fstab

/swapfile none swap sw 0 0


Optional Tweak: Reduce Swappiness (Better for SSDs & RAM):

echo 'vm.swappiness=10' | sudo tee -a /etc/sysctl.conf

sudo sysctl -p


For Windows 11:


  1. Press Windows + R, type sysdm.cpl, and press Enter.
  2. Press Advanced, and then Performance (Virtual Effects) -> Settings.
  3. Press Advanced, and then Change.
  4. Choose the drive [Volume].
  5. Choose Custom Size.
  6. Set Initial Size (MB): 4096
  7. Set Maximum Size (MB): 8192
  8. Press Set, and then OK.


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