This page applies to an earlier version of the AppDynamics App IQ Platform.
For documentation on the latest version, see the 4.4 Documentation.

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The swappiness parameter controls how often the Linux kernel moves processes out of physical memory and onto the swap disk. Because disks are much slower than RAM, if processes are moved out of memory too aggressively, it can lead to slower response times for system and applications.

For best AppDynamics performance, the recommended value is 1.

To configure swappiness
  1. Check the current value for swappiness.

    /sbin/sysctl -a | grep swappiness

    As recommended, if the value is something other than 1, continue setting the value.  

  2. Set the swappiness parameter to one.

    echo 1 > /proc/sys/vm/swappiness
  3. Edit the /etc/sysctl.conf file and add following line:

    vm.swappiness = 1


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