MODULE 5 - VIDEO 2 - MLQ and MLFQ CPU scheduling

[@codingmaterials3787]

Hello Tami, Your explanation was great, but at 4:10 after 17ms the process p1 should come for execution as it was in front of the Q2 also it didn't finish it's time quantum last time, it just ran for 2ms even though the time quantum was 3ms. So now the execution sequence will be, p1--p2--p2--p1--p4--p4--p1--p5--p5--p3--p1--p3--p1.

[@rohitbale15]

Yep that's the correct sequence. You got the perfect answer buddy. Tami made the mistake.

[@bekchanovj]

p3 came first(at time 3, whereas p1 came at 12), that's why she put p3 at 17. And it didn't finish its time quantum because of the higher priority queue(for example p3 got preempted after just 1 second at time 18, although its quantum is 3 )

[@davidwright66]

Hi Tami, Your video is great. It has given me a good understanding of using a multilevel queue. Thanks!!!

[@baduynguyen1711]

I need the answer of MLFQ excercise, please

[@elliegahan7155]

Where can i get the solution for multi level feedback queue?? you only gave the answer to multi level queue

[@deborabruna7141]

It will be, P1->P2->P3->P1->P4->P3->P2->P5->P4->P5->P1->P2->P4?

[@harshamuthugannesudhakara3819]

where can i get solution for MLFQ??

[@TamiSorgente]

MLQ solution is located here: www.cse.fau.edu/~tami/MLQ.PNG

[@aytekors741]

kzbin.info/www/bejne/fIrGlGx6bdGffJI

[@aytekors741]

Thank you for explanations! :)

[@preo2nd]

i don't get how you only have p1 in your ready queue when at time 10 you have p3 arriving as well

[@hassuunna]

yup, you're partially right We have both P1 and P3 but hence they are the same priority you use first come first serve means you're comparing arrival time which is 3, and 4 Respectively so P1 will take the lead and run

[@peter_jhondelacruz1744]

what if they have same priority and same arrival time

[@hassuunna]

Peter_jHon Dela cruz I asked my constructor about that and she said for processor that's nearly impossible to happen but anyone of them will work but better as a student to get them in the order of the table in problem

[@hendraalexander3633]

thank u tami sorgente :) very usefull for me

[@aytekors741]

I used to find the solution for MLFQ on your channel but I can not find it now. Can you write the link also to the explanation part. Thanks

[@aysebilgegunduz]

Answer: kzbin.info/www/bejne/fIrGlGx6bdGffJI

[@TeresaSarasa]

Great video! thank you

[@arturo7392]

what a terrible explanation...