Which of the following components of program state are shared across threads in a multithreaded process?
Can a multithreaded solution using multiple user-level threads achieve better performance on amultiprocessor systemthan on a single-processor system?
Is it possible to have concurrency but not parallelism? Explain.
A system with two dual-core processors has four processors available for scheduling. A CPU-intensive application is running on this system. All input is performed at program start-up, when a single file must be opened. Similarly, all output is performed just before the program terminates, when the program results must be written to a single file. Between startup and termination, the program is entirely CPUbound. Your task is to improve the performance of this application by multithreading it. The application runs on a system that uses the one-to-one threading model (each user thread maps to a kernel thread).