Linux kernel parameters

/proc/sys/vm/swappiness #结果显示该值默认为60.

which

Swappiness=0, it means maximizing the use of physical memory before using swap space,

SWAPPINESS=100, the active use of the swap partition, and the memory of the data in a timely manner into the swap space.

Now the server's memory is a lot of hundred grams, so we can set this parameter value lower, so that the operating system as far as possible to use physical memory, reduce the use of swap, thereby improving the performance of the system.

Recommended Value: 10

Add permanently:

Add the following parameters to the/etc/sysctl.conf file:

vm.swappiness=10

Linux kernel parameters