If users do not specify the initial heap size using `-Xms` or `-XX:InitialHeapSize`, the JVM decides the initial heap size using the `InitialRAMPercentage` setting, defaulting to 1/64 of the system's physical RAM. This default behavior results in large initial heap sizes on modern systems with substantial memory, potentially increasing JVM startup times due to the initialization of heap-related data structures.

With this release, the default value of `InitialRAMPercentage` has been removed. Now, if an initial heap size is not specified, the JVM sets the initial heap size to the minimum possible heap size, which is the value of `MinHeapSize`. This change aims to improve startup performance for default JVM configurations by reducing unnecessary memory initialization.

To get the previous behavior, users can explicitly set `InitialRAMPercentage` to `1.5626`, or configure the initial heap size directly using `-XX:InitialHeapSize` or `-Xms`.