Explain lru additional reference bits algorithm, Operating System

Assignment Help:

Additional Reference bits algorithm

Here we keep an 8-bit byte for every page in memory. At standard intervals the reference bit is shifted by the OS. If a shift register contains 00000000 then the page hasn't been used for the last 8 time periods. A page with a history 11000000 is more recently used than 01000000. The no of bits are able to be varied accordingly to the needs of the OS. 

 


Related Discussions:- Explain lru additional reference bits algorithm

Thread, advantages and disadvantages of kernal level thread

advantages and disadvantages of kernal level thread

How many disks can be used effectively by one fast wide bus, Q. More than ...

Q. More than one disk drive is able to be attached to a SCSI bus. Especially a fast wide SCSI-II bus can be connected to at most 15 disk drives. Remember that this bus has a bandw

System bus and device speeds as the cpu speed increases, Q. Why is it impor...

Q. Why is it important to scale up system bus and device speeds as the CPU speed increases? Answer: Consider a system which carries out 50% I/O and 50% computes. Doubling-up

Disk scheduling algorithms-first come, FCFS (First Come, First Served) Per...

FCFS (First Come, First Served) Perform operations in order requested No reordering of work queue No starvation every demand is serviced Poor performance

Digital circuits and design , 1. Draw a schematic diagram of a CMOS inverte...

1. Draw a schematic diagram of a CMOS inverter and explain its operation. 2. Draw schematic diagrams of CMOS NAND and NOR gates, and explain their operation. 3. Explain what

What are the reasons for process suspension, Q. What are the reasons for pr...

Q. What are the reasons for process suspension? Reasons for process suspension 1.  Swapping 2.  Timing 3.  Interactive user request 4.  Parent process request

Explanation of modern cpu architectures, Your CTO liked your proposal from ...

Your CTO liked your proposal from Unit 2 so much he only trusts you to explain complex concepts to his managers. He now wants you to write him a four page paper explaining the CPU,

Describe paging technique used in unix systems, Describe paging technique u...

Describe paging technique used in UNIX systems. When a process begin in UNIX, not every its memory pages are read in from the disk at once. In its place, the kernel loads into

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