●●● ●●●● 4.2 Multithreading Models :99 ●●●0 ● Advantages o Developers can create as many users threads as necessary, and the corresponding kernel threads can run in parallel on a multiprocessor When a thread performs a blocking system call the kernel can scheduler another thread for execution ●TWo- level mode o Variation on the many-to-many model Numbers of user threads is larger or equal to the numbers of kernel threads A user thread (important task can be bound to a kernel thread16 4.2 Multithreading Models ⚫ Advantages ⚫ Developers can create as many users threads as necessary, and the corresponding kernel threads can run in parallel on a multiprocessor ⚫ When a thread performs a blocking system call, the kernel can scheduler another thread for execution ⚫ Two-level Model ⚫ Variation on the many-to-many model ▪ Numbers of user threads is larger or equal to the numbers of kernel threads ▪ A user thread (important task) can be bound to a kernel thread