Operating systems The quantum time is 48 msec and the time for switching between processes is 2 msec. According to Round Robin Scheduling algorithm. What is the efficient usage percent of CPU? 0%96 B) %48 С) %4 D) %2
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- Round Robin (RR) scheduling algorithm uses time quantum (Q) that determines the time slice in which a scheduled process can use the CPU. In case the CPU scheduler uses large value for (Q), then which of the following applies a. It will be better for the users if the longer cpu burst processes to be scheduled first Ob. It will be better for the users if the shorter cpu burst processes to be scheduled first c. It will make no difference on the performance in case who will be scheduled first d. The Algorithm will be similar to SJF O e. B and DComputer Science The total ISR instruction count for interrupt A, interrupt B, and interrupt C are 75, 105, and 80 instructions, respectively. Interrupt A occurs thrice as often as interrupt B, while interrupt C is called once whenever the other interrupts are called. If our microcontroller executes 60 million instructions per second and the combined CPU percentage of the three interrupts is 10% assuming they do not interrupt each other. What is the CPU overhead of interrupt A alone? (Answer as a percentage rounded off to two decimal places e.g. 12.345% is entered as 12.35) A timer was configured to generate an interrupt with a prescaler of 8 and a period register of 311. The ISR for the timer interrupt takes 73 instruction cycles in total, including context save and restore. If the instruction frequency is 8 MHz and the timer operates continuously, what is the percentage of CPU time used for the ISR? Note: Assume 1 additional cycle between timer rollovers and answer in percentage…Explain the concept of speculative execution in modern CPU architectures and its role in optimizing program performance.
- A CPU's clock rate is 4 GHz. This CPU's cache hit time is measured as 1 clock cycle, the miss penalty is 35 cycles. The cache hit rate is 80%. What's this CPU's average memory access time measured in ns?Computer Science A multiprogrammed system with a single CPU has a very large number of CPU boundprocesses running on it that all have the same priority. Could you think of a CPU schedulingalgorithm that would combine the lowest possible response times with the highest possiblethroughput and no starvationRound Robin Process Suppose we have a four (4) core processor and all processes are designed to be multi-threaded. Now, like all processors with more than one core, they have the ability to perform multiple tasks at the same time. If there are four (4) with the following CPU and I/O cycles according to the table below, calculate the times for the Round Robin scheduling process (view image): Where A,B,C,D correspond to A=6, B=3, C=5, D=8.
- A CPU is equipped with a cache. If it takes 4 ns to access the data from the cache and 100 ns to access data from the main memory, what is the effective memory access time if the hit ratio is 95%? Answer = _nsA CPU is equipped with a cache. Accessing a word takes 40 clock cycles if the data is not in the cache and 5 clock cycles if the data is in the cache. What is the effective memory access time in clock cycles if the hit ratio is 80%?In a multiprogrammed environment with 32MB of RAM where all processes require9MB of unshared RAM and spend 40% of their time in I/O wait, calculate themaximum achievable CPU utilization. If the RAM available is increased by 700%and time spent in I/O wait increases by 100%, calculate how much RAM will remainunused when CPU utilization is just above 99%.
- SFJ Process Suppose we have a four (4) core processor and all processes are designed to be multi-threaded. Now, like all processors with more than one core, they have the ability to perform multiple tasks at the same time. If there are four (4) with the following CPU and I/O cycles according to the table below, calculate the times for the SJF scheduling process (view image): Where A,B,C,D correspond to A=6, B=3, C=5, D=8.Using SJN algorithm Arrival Time 1 4 Job A В C D CPU Cycle 2 1 2 Turnaround Time Find the turnaround time for A, B, C and D. 3.Logical address converted into linear address using then into physical address on memory using. A is a logically self-contained unit of code that receives a list of parameters and performs computation, and returns results The combines your program's object file created by the assembler with libraries to produces an executable program makes it possible to start an instruction before completing the execution of previous one. The architecture that has a small and simple instruction set with which all instructions have the same width Uses the system bus to communicate with the processor and to handle low-level operations The mode in which each program can address a maximum of 4 GB of memory. Expensive, used for cache memory, faster access, no refresh The table provided by the operating system contains segment descriptors for all programs and initialized during boot up. A special 32-bit register that indicates the address of the next instruction to be executed by the microprocessor…