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5 Disk, seek time, latency, sector, request Single-platter disk rotation speed: 7200 rpm number of tracks on one side of platter: 30,000 number of sectors per track: 600 seek time: 1 ms for every 100 tracks traversed Disk receives a request to access a random sector on a random track. assume the head starts at track 0.
a. What is the average seek time?b. avg. rotational latency?c. transfer time for a sector?d. total ave. time to satisfy a request?
Traversed Disk receives request to access random sector on random track. Suppose head starts at track 0. Determine the average seek time?
Forking the child process
What are some ways you could integrate Linux servers into a Windows network to share information? What would be the advantages and disadvantages?
The software house has been contacted by a Governmental Nuclear Reactor Agency that wants to change the current Operating System of their plant.
Qqueue for service (if the server process is busy servicing another request). Requests in queue are served according to the scheduling policy in use: First-In-First-Out (FIFO) scheduling.
Computer has 16 pages of virtual address space but only three physical pages frames. Initially physical memory is empty. Program references virtual pages in order 1,2,3,4,5,3,4,1,6,7,8,7,8,9,7,8,9,5,4,5,4,2 Which references a page fault with LRU ..
Suppose an operating system maps user-level threads to the kernel using the many-to-many model and the mapping is done through LWPs.
When a process first start execution, how would you characterize the page fault rate? Once the working set for a process is loaded into memory, how would you characterize the page fault rate?
Illustrate the results applying deadlock detection algorithm to following data. Give proper description for supporting your answer.
The purpose of this program is to change such that it makes use of the IPC facilities provided by UNIX.
Explain a complication that concurrent processing adds to an operating system.
Deadlock Avoidance and Scheduling
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