Adding swap space in Linux

Linux has added swap space-Linux Enterprise Application-Linux server application information. For details, refer to the following section. Today, I suddenly found that the proxy server is unavailable. I went up and checked the squid port to Stop listening and view the log. The following error occurs:

Localhost kernel: Out of Memory: Killed process 785 (squid ).

There was no valuable result when google made a pass on the Internet. Let's look at it for another reason. Is the linux swap used up? The memory is not enough, so it's a big shock, there is only 8 M swap space. I guess I did not accidentally make a mistake!

It is impossible to add a swap partition, and the disk space has already been allocated. Add the swap file.

Generate M file

# Dd if =/dev/zero of = swapfile bs = 1024 count = 1317000

Create as a swap file

# Mkswap swapfile

Make swap effective

# Swapon swapfile

View swap

# Swapon-s

Filename Type Size Used Priority

/Dev/sda3 partition 8024 2504-3

/Var/swapfile file 1316992 0-4

Added to the fstab file to enable automatic startup during system boot.

# Vi/etc/fstab

/Var/swapfile swap defaults 0 0

Start squid and run the top command.

Swap: 1325016 K av, 2504 K used, 1322512 K free

# Netstat-ln

Tcp 0 0 202. xxx: 3128 0.0.0.0: * LISTEN

Success!

The process is simple, but I made such a big mistake when installing the system.