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USER-LEVEL THREADS (ULT)
In this level the kernel isn't aware of the existence of threads -- All thread management is complete by the application by using a thread library. Thread switching doesn't require kernel mode privileges no mode switch and scheduling is application specific.
What are the necessary conditions for deadlocks? 1. Mutual exclusion : Only one process at a time is able to use the resource. 2. Hold and wait : A process should be holdi
Describe the technique of packing. The physical record size will not accurately match the length of the desired logical record and the Logical records may even differ in length
LRU approximation page replacement In this we utilize the reference bit associated with the page entry to choose a page to be removed. The various algorithms used for the imp
What is the use of FIFOs in client-server applications
Q. Catalogue the design goals of Windows XP. Answer: Design goals comprise security and reliability and Windows and POSIX application compatibility with high performance and ex
Performance of demand paging Demand paging can have an important effect on the performance of a computer system. As long as there are no page faults, the effective access time
ADVANTAGES AND INCONVENIENCES OF KLT Advantages: the kernel be able to simultaneously schedule many threads of the same process on many processors blocking
Use and overview? Pure and impure interpreter?
Q. What are two differences among user-level threads and kernel-level threads? Under what situations is one type better than the other? Answer: (1) User-level threads are un
What is logical address space and physical address space? The set of all logical addresses formed by a program is known as a logical address space; the set of all physical addr
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