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Andrew S. Tanenbaum (OS) Edition 4 Exercise 2 Question 27 (Page No. 175)
In a system with threads, is there one stack per thread or one stack per process when user-level threads are used? What about when kernel-level threads are used? Explain.
In a system with threads, is there one stack per thread or one stack per process when user-level threads are used? What about when kernel-level threads are used? Explain....
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Andrew S. Tanenbaum (OS) Edition 4 Exercise 2 Question 24 (Page No. 175)
Does Peterson’s solution to the mutual-exclusion problem shown in Fig. $2-24$ work when process scheduling is preemptive? How about when it is nonpreemptive?
Does Peterson’s solution to the mutual-exclusion problem shown in Fig. $2-24$ work when process scheduling is preemptive? How about when it is nonpreemptive?
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Andrew S. Tanenbaum (OS) Edition 4 Exercise 2 Question 23 (Page No. 175)
Does the busy waiting solution using the turn variable (Fig. $2-23$) work when the two processes are running on a shared-memory multiprocessor, that is, two CPUs sharing a common memory?
Does the busy waiting solution using the turn variable (Fig. $2-23$) work when the two processes are running on a shared-memory multiprocessor, that is, two CPUs sharing ...
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Andrew S. Tanenbaum (OS) Edition 4 Exercise 2 Question 15 (Page No. 175)
Why would a thread ever voluntarily give up the CPU by calling thread yield? After all, since there is no periodic clock interrupt, it may never get the CPU back.
Why would a thread ever voluntarily give up the CPU by calling thread yield? After all, since there is no periodic clock interrupt, it may never get the CPU back.
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258
Andrew S. Tanenbaum (OS) Edition 4 Exercise 2 Question 14 (Page No. 175)
In Fig. $2-12$ the register set is listed as a per-thread rather than a per-process item. Why? After all, the machine has only one set of registers.
In Fig. $2-12$ the register set is listed as a per-thread rather than a per-process item. Why? After all, the machine has only one set of registers.
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262
Andrew S. Tanenbaum (OS) Edition 4 Exercise 2 Question 10 (Page No. 174)
In the text it was stated that the model of Fig. $2-11(a)$ was not suited to a file server using a cache in memory. Why not? Could each process have its own cache?
In the text it was stated that the model of Fig. $2-11(a)$ was not suited to a file server using a cache in memory. Why not? Could each process have its own cache?
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Andrew S. Tanenbaum (OS) Edition 4 Exercise 2 Question 8 (Page No. 174)
Consider a multiprogrammed system with degree of $6$ (i.e., six programs in memory at the same time). Assume that each process spends $40\%$ of its time waiting for I/O. What will be the CPU utilization?
Consider a multiprogrammed system with degree of $6$ (i.e., six programs in memory at the same time). Assume that each process spends $40\%$ of its time waiting for I/O. ...
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Andrew S. Tanenbaum (OS) Edition 4 Exercise 2 Question 5 (Page No. 174)
A computer system has enough room to hold five programs in its main memory. These programs are idle waiting for I/O half the time. What fraction of the CPU time is wasted?
A computer system has enough room to hold five programs in its main memory. These programs are idle waiting for I/O half the time. What fraction of the CPU time is wasted...
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Andrew S. Tanenbaum (OS) Edition 4 Exercise 2 Question 4 (Page No. 174)
When an interrupt or a system call transfers control to the operating system, a kernel stack area separate from the stack of the interrupted process is generally used. Why?
When an interrupt or a system call transfers control to the operating system, a kernel stack area separate from the stack of the interrupted process is generally used. Wh...
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