Linux Swap 启停及swappiness设置
生成swap分区 可以通过磁盘分区和文件两种方式进行操作 1. 通过磁盘分区 划出一块4G磁盘fdisk /dev/sdb sdb磁盘对应的文件 [root@centosgpt ~]# fdisk /dev/sdb Command (m for help): n Partition number (1-128, default 1): First sector (34-41943006, default 2048): Last sector, +sectors or +size{K,M,G,T,P} (2048-41943006, default 41943006): +4G Created partition 1 ... Command (m for help): p ... # Start End Size Type Name 1 2048 8390655 4G Linux filesyste .. Command (m for help): w The partition table has been altered! 创建分区mkswap /dev/sdb1 sdb1对应分区 [root@centosgpt ~]# mkswap /dev/sdb1 Setting up swapspace version 1, size = 1020 KiB no label, UUID=5dabc5b1-d763-4757-9e0c-383f0cacb0ea 2. 通过文件生成 生成文件dd if=/dev/zero of=/swap bs=1MB count=1024 ...