Optimal replacement policy, Operating System

Assignment Help:

The optimal replacement policy, called OPT, is to evict the page which will be accessed farthest into the future. Since we can't predict the future precisely, we can't implement OPT in any real system. We can, however, run OPT on a saved trace of memory accesses, to measure how our real algorithm compares with OPT for a given trace.


Related Discussions:- Optimal replacement policy

Explain file control list and user control list, Q. Researchers have recom...

Q. Researchers have recommended that instead of having an access list associated with each file (specifying which users can access the file and how) we should have a user control

Virtual memory, In modern operating systems, applications do not directly a...

In modern operating systems, applications do not directly access the physical memory. Instead, they use so-called virtual memory, where each virtual address is translated to a phys

Linux kernel components, Example 1.  The diagram illustrating the data stru...

Example 1.  The diagram illustrating the data structures of in-memory VFS objects and on-disk objects and their relationships on slide 24 of the lecture notes OSD.4. This diagram i

Define file organization, File Organization     * Sequential     * D...

File Organization     * Sequential     * Direct     * Indexed A file still if it is stored on a magnetic disk or CD-ROM disk may perhaps have a sequential file organiz

Explain the booting process for a windows xp system, Q. Explain the booting...

Q. Explain the booting process for a Windows XP system? Answer: (1) Since the hardware powers on the BIOS begins executing From ROMand loads as well as executes the bootstrap

Nested Macro calls, . Nested Macro calls are expanded using the

. Nested Macro calls are expanded using the

Software Support (Introducing Operating Systems), The questions ask List fo...

The questions ask List four major functions of an OS. My answer: Function 1: Provide a user interface Function 2: Manage files Function 3: Manage hardware Function 4: Manage appli

What is the use of multiprogramming on individual processors, What is the u...

What is the use of multiprogramming on individual processors ? In the usual multiprocessor, which is dealing with independent or coarse-grained synchronization granularity, it i

Explain lru page replacement, LRU page replacement In slightest recentl...

LRU page replacement In slightest recently used page replacement algorithm we will replace that page that hasn't been used for the longest period of time. This is similar as an

Determine the syntax of the fork and join primitive, Determine the syntax o...

Determine the syntax of the Fork and Join Primitive  Answer: Syntax of the Fork and Join Primitive is as follow: Fork Join

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd