Increase swap space

Linux The kernel will RAM Divide into memory blocks and swap (Swap) process , In exchange for （Swap） Process is when Linux The kernel uses hard disk space （ Swap space ） To store RAM Information in , So as to release some RAM Space . Use exchange (Swap) It 's an extension RAM It's a very useful way to , Because it is in RAM Provide the necessary additional memory when the space is exhausted and the process must continue . When installed Linux Memory of is less than 1Gb when , This is especially recommended .

Be careful ： One disadvantage of swap space is that it is better than RAM Much slower . therefore , Adding swap space won't make your computer faster , It will only help overcome RAM Size brings some limitations .

1. see swap The size

2. establish swap file

Create in the root directory 4GB The size of Swap file .

mkdir /swap
cd /swap
sudo dd if=/dev/zero of=swapfile bs=1024 count=4000000
sudo mkswap swapfile

Activate swapfile：

sudo swapon swapfile

uninstall swapfile：

sudo swapoff swapfile

3. Power on auto mount swap

sudo vim /etc/fstab

Add content ：

/swap/swapfile /swap swap defaults 0 0