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processor utilization is the average fraction of time during which the processor is busy, we mean that the processor is either executing the user processes or operating system processes. processor utilization is generally measured by using a NULL process that runs when no other process is running. process utilization should range from 40% to 90%.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoHigh utilization for the CPU does not always indicate a performance problem. The CPU performs all calculations that are needed to process transactions. The more transaction-related calculations that it performs within a given period, the higher the throughput will be for that period. As long as transaction throughput is high and seems to remain proportional to CPU utilization, a high CPU utilization indicates that the computer is being used to the fullest advantage.
On the other hand, when CPU utilization is high but transaction throughput does not keep pace, the CPU is either processing transactions inefficiently or it is engaged in activity not directly related to transaction processing.
Processor utilization is controlled by the o/s for different programs.
The use of automatic job sequencing is good but still it did not provide the result expected,
because of the slow nature of the i/o devices, let us look a representative example to see the
utilization of a processor resource, while reading and writing one record to a file.
Suppose a typical execution scenario:
CPU Utilization = 0.0001/0.0031
= 0.032 = 3.2 %
This shows that only 3.2% of the time of CPU processor is being utilized effectively.
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Impact of CPU utilization by increasing CPU speed?
Increasing CPU speed will maintain the current level of CPU utilization, in the case where the process mix is compute bound, or decrease CPU utilization, in the case where the process mix is I/O bound.
How can CPU utilization be increased?
take ur CPU outside from ur home and burn it>>:)
What is the main advantage of multiprogramming?
Multiprogramming increases CPU utilization by organizing jobs so that the CPU always has a job to execute.
Why scr daemon is taking 99 percent of CPU utilization. Is it really needed to run or it can be killed?
No daemon should ever take that much CPU utilization. That particular daemon will do that if there are some resolution issues. See the related link for details.
3 What is the main advantage of multiprogramming?
Answer:Multiprogramming makes ef?cient use of the CPU by overlapping thedemands for the CPU and its I/O devices from various users. Itattempts to increase CPU utilization by always having something for the CPU to execute
Discuss how the following pairs of scheduling criteria conflict in certain settings?
• CPU utilization and response time: CPU utilization is increased if the overheads associated with context switching is minimized. The context switching overheads could be lowered by performing context switches infrequently. This could however result in increasing the response time for processes. • Average turnaround time and maximum waiting time: Average turnaround time is minimized by executing the shortest tasks first. Such a scheduling policy could however starve long-running tasks and thereby increase their waiting time. • I/O device utilization and CPU utilization: CPU utilization is maximized by running long-running CPU-bound tasks without performing context switches. I/O device utilization is maximized by scheduling I/O-bound jobs as soon as they become ready to run, thereby incurring the overheads of context switches.
Which three physical network problems should be checked when a bottom up troubleshooting approach has been chosen to troubleshoot network performance?
cable connectivity,high collision counts, high CPU utilization rates
What is a multi program system?
A group of jobs that are ready to be executed is called job pool. Since there is more than one job that can be executed, it is possible for the operating system to make a decision about which job to execute next. That decision keeps CPU utilization as high as possible. In general, it is not possible for a single user to keep CPU or I/O devices busy at all times. Multiprogramming allows the system .to increase CPU utilization by ensuring that the CPU always has a job to execute. The CPU has a pool of jobs. When the currently executing job has to wait (if it is performing some I/O), it is removed from the CPU- Another job is selected and the CPU now executes it. This process ensures that CPU is always executing a job if there is a job to execute. In a non-multiprogrammed system, if a job had to wait for an I/O operation, CPU would also have to wait until I/O was finished. Hammad Ali
What is multie programming system?
A group of jobs that are ready to be executed is called job pool. Since there is more than one job that can be executed, it is possible for the operating system to make a decision about which job to execute next. That decision keeps CPU utilization as high as possible. In general, it is not possible for a single user to keep CPU or I/O devices busy at all times. Multiprogramming allows the system .to increase CPU utilization by ensuring that the CPU always has a job to execute. The CPU has a pool of jobs. When the currently executing job has to wait (if it is performing some I/O), it is removed from the CPU- Another job is selected and the CPU now executes it. This process ensures that CPU is always executing a job if there is a job to execute. In a non-multiprogrammed system, if a job had to wait for an I/O operation, CPU would also have to wait until I/O was finished. Hammad Ali
What information can a network performance monitoring tool typically provide?
The more advanced solutions will provide anything your mind can dream up, but typically you're gonna look at CPU utilization, RAM utilization, Disk Space, and bandwidth over time.
What are advantages of multiprogramming?
Multiprogramming makes effifcient use of the CPU by overlapping the demands for the CPU and its I/O devices from various users. It attempts to increase CPU utilization by always having something for the CPU to execute.
What is CPU sheduling algorithm?
Basically,this is a need in case of multiprogramming.For optimum utilization of CPU it should be utilised in the meanwhile time when some process is in waiting state for some I/O or waiting for some event to occur. So,for this many programs should be in memory in waiting state so that CPU can be allocated to some other process for optimum utilization of CPU. A schedule(time table in broad sense) which will decide Cpu will be allocated to which process when some previous process is in waiting state. Now this schedule is designed according to some criteria(algorithm) to decide CPU will be allocated to which process. Some Algorithms: 1.First Come First Serve(FCFS) 2.Shortest Job Scheduling(SJS) 3.RoundRobin Scheduling(RRS)
