Ftrace is a powerful tracing framework built into the Linux kernel that helps developers analyze and debug the performance of their systems. It allows users to track function calls, interrupts, and other kernel events, providing insights into how the kernel operates in real-time. By using Ftrace, developers can identify bottlenecks, optimize code, and improve overall system performance. It offers various tracing options, including function tracing, event tracing, and latency tracking, making it a versatile tool for understanding the behavior of the Linux kernel and applications running on it.