Add virtual memory swap partitions for Linux systems

AminLinuxThe study notesSwapPartitioning

First, the role:

Swap partitions are swap partitions that swap with swap When the system is out of physical memory and have a significant impact on the performance of the Web Server by adjusting the swap partition size to improve server performance and save on resource costs.

Second, step:

1. Create a swap file First

The command is as follows:

DD If=/dev/zero Of=/tmp/swap bs=1024k count=1000

To view the current system memory:

Free-m: '-M ' is showing the result in 'MB' form

2. Format the swap file we created

Command:

Mkswap-f/tmp/swap

3. Add Virtual Memory

Swapon/tmp/swap

The memory of the current swap partition has been increased by 1000MBcomparedto 1899MB.

4. Uninstalling virtual Memory

Command:swapoff/tmp/swap

OK Now after uninstalling, see only 899MB .

Add virtual memory swap partitions for Linux systems