linux[base]-22-[disk partition management]-[swap partition]-[02]

Add Swap partition

Swap partition:

Swap is a virtual memory similar to the one in Jade win, and a portion of the hard disk space virtual

Memory to solve the problem of insufficient memory, but speed does not change, slow

Depending on the speed of the hard disk itself, swap is typically used when physical memory is exhausted

Instance:

[Email protected] ~]# fdisk/dev/sdb #分区sdb

Command (M for help): N

Select (default p): P

Partition number (2-4, default 2):

First sector (10487808-41943039, default 10487808):

Using Default Value 10487808

Last sector, +sectors or +size{k,m,g} (10487808-41943039, default 41943039): +5g #5G大小

Command (M for help): T #更改分区类型

Partition Number (2, default): 2 #2号分区

Hex Code (type L to list all codes): L #列出分区所有可用的分区类型

Hex Code (type L to list all codes): #==swap

Changed type of partition ' Linux ' to ' Linux Swap/solaris '

Command (M for help): W #保存退出

[Email protected] ~]# partprobe #让内核同步

[Email protected] ~]# mkswap/dev/sdb2 #格式化为swap type 　

Setting up Swapspace version 1, size = 5242876 KiB

No label, UUID=99F3D6AD-DE95-498D-AB22-C712B481CA97

[Email protected] ~]# free-m #查看swap大小

swap:2047 0 2047

[Email protected] ~]# swapon/dev/sdb2 #将交换分区启用

[Email protected] ~]# free-m #查看swap大小

swap:7167 0 7167

linux[base]-22-[disk partition management]-[swap partition]-[02]