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 CS501 Assignment:                                                                                      

 

Suppose we have a Processor XYZ with the following specifications:

 

  • Processor speed is 1 GHz.
  • It takes 2500 clock cycles to carry out a context switch followed by starting an Interrupt Service Routine (ISR).
  • To execute an ISR, 5000 cycles are required.
  • The device makes 100 interrupt requests per second.
  • Moreover when there are no interrupts, the processor polls for every 0.7 milli-sec and 300 cycles are required to poll an I/O device.

 

Students are required to calculate:

 

  1. No of cycles/sec the processor spends for handling I/O provided interrupts are used only.
  2. Percentage of CPU time used in interrupts handling.
  3. No of cycles/sec spent in I/O when polling is also used with interrupts.
  4. How frequently the processor polls so that it incurs the same overhead as interrupts.

 

 

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CS501 Assignment#02 Solution

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2 aye ga

zaman pher to sari values change ho jay gi to kia theak ho ga or GHz ka convert kasy karna

mny jo solve kia hai wo me ap logo sy share kr dta hu... mny yai wala submit b kr dia hai... i dont knw k ap logo k ye thk kagega ya ghalt... check this one

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1 GHz equal to 1000 MHz

giga ko mega krne ki zrort kya h reason dy koi

ma ny b asy hi ki ha  ans same ha ab pata ni theak ha ya galt

khalid rhman ya dono values change q lihki ga or 2500-0.3 ni karna kia

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