Unity Game Optimization - Third Edition

Message cleanup

Since message objects are classes, they will be created dynamically in memory and will be disposed of shortly afterward when the message has been processed and distributed among all listeners. However, as you will learn in Chapter 8, Masterful Memory Management, this will eventually result in garbage collection, as memory accumulates over time. If our application runs for long enough, it will eventually result in occasional garbage collection, which is the most common cause of unexpected and sudden CPU performance spikes in Unity applications. Therefore, it is wise to use the messaging system sparingly and avoid spamming messages too frequently on every update.

The more important cleanup operation to consider is the deregistration ...