coolDownPeriodSec property

The number of seconds that your application takes to initialize on a VM instance.

This is referred to as the [initialization period](/compute/docs/autoscaler#cool_down_period). Specifying an accurate initialization period improves autoscaler decisions. For example, when scaling out, the autoscaler ignores data from VMs that are still initializing because those VMs might not yet represent normal usage of your application. The default initialization period is 60 seconds. Initialization periods might vary because of numerous factors. We recommend that you test how long your application takes to initialize. To do this, create a VM and time your application's startup process.