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Hyper-threading works by duplicating those parts of processor which store architectural state but not duplicating main execution resources. This permits a Hyper-threading equipped processor to pretend to be two 'logical' processors to host operating system, allowing operating system to schedule 2 processed or threads concurrently. Where execution resources in a non-Hyper-threading capable processor aren't used by current task and particularly when processor is stalled a Hyper-threading equipped processor can use those execution resources to execute other scheduled task.
Besides its performance implications, this innovation is transparent to Programs and operating systems. All that is needed to take advantage of Hyper-Threading is symmetric multiprocessing (SMP) support in operating system as logical processors emerge as standard separate processors.
Though it's likely to optimize operating system behaviour on Hyper-threading capable systems like Linux techniques explained in Kernel Traffic. E.g. consider an SMP system with two physical processors which are both Hyper-Threaded (for a total of four logical processors). If operating system's process scheduler is unaware of Hyper-threading it will treat all four processors similarly.
Consequently if just two processes are entitled to run it may decide to schedule those processes on two logical processors which happen to belong to one of the physical processors. So one CPU will be very busy while other CPU will be entirely idle, leading to poor overall performance. This can be avoided by improving scheduler to treat logical processors in a different way from physical processors; in a sense it's a limited form of scheduler changes which are needed for NUMA systems.
l need a help for my project pllz:) Write a program that will simulate ATM machine. The Program should prompt the user to enter a valid PIN password number of 5 digits (PIN: 12312)
Put the node in the right subtree Then, Put the root Put the node in the left subtree
What are the different types of parameters? Formal Parameters: Parameters, which are described during the definition of subroutine with the FORM statement.
Q. Programming with loops and comparisons? This segment deals with more practical illustrations employing comparison, loops and shift instructions. Simple Program Loops
difference between pure and impute inter preter
How many two input AND gates and two input OR gates are required to realize Y = BD+CE+AB ? Ans. Here three product terms, therefore three AND gates of two inputs are needed.
Discuss the advantages of store program control (SPC) automation in telephone switching. Advantages of SPC: (i) Simple to control (ii) Simple to maintain (iii) Fine-
What is meant by a field The consecutive nonwhite space characters that define a data item collectively define a field. It is possible to limit the number of such characters b
Electric typewriter : Electric typewriters are similar to standard typewriters but with an electronic motor taking the place of human energy. It is much faster than the standard m
Explain the Quantization error of an ADC. Ans. Quantization error- An analog voltage is within the range of 0 to 1V and for 3 bit output, the size of all intervals are
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