I’ve read multiple articles about best practices for setting the {Min/Max/Initial}RAMPercentage values for java applications in the cloud environment. The purpose of Min and Max RAM Percentage flags is clear for me.

On the other side I can’t neither understand nor find the reason behind recommendations (1st, 2nd and 3rd) to set the -XX:InitialRAMPercentage and -XX:MaxRAMPercentage to the same values.

Therefore I would like to understand:

1. why should I set the InitialRAMPercentage at all, if it will be scaled up automatically during the application lifetime (because initial value lies around 1.5 percent)?
2. why should I set the InitialRAMPercentage directly to the same value as MaxRAMPercentage?