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Q 1. Suppose we have a 1.5-GHz CPU to which the following three I/O devices are connected:
Polling requires 300 instructions for each I/O device. Students are required to compute the percentage of CPU time required to poll each device.
Q 2. Instead of polling, we want to use interrupts for handling the DVD drive. Keeping in view the DVD drive to be active only 12% of the time, you are required to compute the percentage of CPU time for handling it.
Note: Interrupt and polling requires the same amount of instructions.
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we have to divide it. for 32bit it should be divided by 4 and for 16bit it should be divided by 2.
then we get the ans 2000K words for 32bit processor and 4000K words for 16bit processor
Na bhai na, galat bol rhy ho ap, assignment me 32 bit nhi dia hoa, 32 byte dia hoa he, means 256 bits, aur isi trha 16 byte means 128 bits
yup.. u r right...
Is assignment me jo main problem he wo ye k MIPS kia hoon gy, aur unhy calculate kis trha krna he.
kuch samjh nhi aa rhi. ajeeb hi questions hain. koi solution nhi ban rha.
ek cheez clear hoti hai tu dusre me issue ho jata hai
here were are give GHZ instead of MIPS so we have to use 1.5 GHZ CPU instead of MIPS
Nhi brother me b 1.5 GHz use kr rha hoon, lkn ye sahi solution nhi he, 1.5 GHz se MIPS calculate krny k lye CPI need he jo k assignment me given nhi he, 1.5 GHz to tb use kr skty hen agr hr instruction 1 clock cycle me complete ho jay, lkn aysa nhi hota. Ksi b processor ki avg CPI 1 clock cycle se zeyada hi hoti he.
phir kiya karen..this is very confusing.. today is last day aur kuch ban bhi nhi rha T-T
check this example
for hard disk
this is an example i got from somewhere
Ye example kaha se li he aapny?
internet se li