This document discusses various performance tips for Ring programs: 1. Ring is designed for simplicity but can still perform many common tasks in around 1 second on modern hardware. C extensions can further improve performance. 2. Creating lists using the range operator is faster than a for loop or list() function. Using *= is faster than * for arithmetic. 3. Calling len() before a for loop is faster than within. Calling functions is slightly faster than methods, and the dot operator is faster than braces for methods.