How does the implementation of virtual threads reduce CPU load?

Virtual threads in Java are lightweight threads managed not by the operating system but by the JVM itself. They allow creating thousands or even millions of threads with minimal CPU and memory overhead.

How this reduces CPU load:

• Virtual threads use a cooperative multitasking model, switching between tasks without the cost of system calls.
• They do not block system threads while waiting for I/O, enabling efficient resource utilization.
• Due to lower overhead for creation and switching, they reduce the load on the OS scheduler and CPU.

Example: instead of creating 1000 system threads, which heavily load the processor, you can create 1000 virtual threads, which the JVM efficiently distributes across fewer system threads.