text 如何在Ubuntu 16.04上添加交换空间

Posted 2021-04-29

Check the System for Swap Information:
sudo swapon --show

free -h

Check Available Space on the Hard Drive Partition:
df -h

Create a Swap File:
sudo fallocate -l 1G /swapfile
ls -lh /swapfile
-rw-r--r-- 1 root root 1.0G Apr 25 11:14 /swapfile

Enabling the Swap File:
sudo chmod 600 /swapfile
ls -lh /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
sudo swapon --show
free -h

Make the Swap File Permanent:
sudo cp /etc/fstab /etc/fstab.bak
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab

Tweak your Swap Settings:
Adjusting the Swappiness Property
cat /proc/sys/vm/swappiness
sudo sysctl vm.swappiness=10

sudo nano /etc/sysctl.conf
  > vm.swappiness=10
  
Adjusting the Cache Pressure Setting:
cat /proc/sys/vm/vfs_cache_pressure
sudo sysctl vm.vfs_cache_pressure=50

sudo nano /etc/sysctl.conf
  > vm.vfs_cache_pressure=50