Process Scheduling

Operating System: Process Scheduling
Topics discussed:
Process Scheduling
1) Objectives of multiprogramming and time-sharing.
2) Process Scheduler.
3) Scheduling Queues.
4) Job Queue.
5) Ready Queue.
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[@quratraja7391]

Thank You.
So process scheduling is ond of the important service of operating system. Job Queue contains all the process while ready Queue contains those that are ready for execution and waiting for CPU to be assigned. When a process is taken by processor and has started execution, it can either end, swap, or go to wait for I/O. Swapped processes and those waiting for I/O's have their own respective queues.

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[@hoangminhchau2187]

Multiprogramming: multiple processes running at all time, to maximize CPU utilization
Time sharing: switching CPU between processes happens so frequently that user can interact with programs while running
A process scheduler will select an available process (from a list of ready processes) to be executed
There are 2 queues:
- Job queue: when a process enters the system, it will be pushed to this queue. So this queue represents all the processes of the system
- Ready queue: all the processes waiting in the memory to be assigned a CPU to execute
When a process is assigned a CPU, and then another higher priority process come, it will be swapped out, and pushed to the parially executed processes queue, and then swapped in back to the ready queue.

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[@Jay-lj2bv]

The ready queue is a queue of all processes that are waiting to be scheduled on a core/CPU.
The job queue is the list of processes that reside on mass storage/secondary storage and await main memory allocation.

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Wonderful explanation...
Completely understoood the concept...

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Thank you for creating amazing lectures

[@ikramwani5207]

All i can say is that process scheduling is about reasons that can make a process wait before and after interacting with the cpu until a process ends.A process can never be compared to a person waiting for his turn while buying something .

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Very Informative. Thank you :)

[@SuperEren23]

without captions i thought scheduling was shadowling
But these lessons still save me a lot of time thanks @Neso Academy

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very well explained for a technical concept not talked about commonly

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It feels like i am listening galvin OS book, but still great explaination.

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Thanks

[@mdfeatherwx]

I have a question on last diagram. It seems like logical concept of cpu scheduling. Considering with computer architecture, Is it devided like this on hardware/or mainboard? If you say so, Where is the Ready queue?

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[@piyush4830]

okk, now i have a doubt as you told that in 5:36 the process scheduler schedule the process. Now in case of more than one processor you told that the rest will have to wait until the CPU is free and can be rescheduled. So why we have to wait if there are more processors? CPU might be able to process more than one process at a single time. The thing which you told must be applicable for single processor system. Isn't it?

[@balveersinghbhatia]

Tq sir

[@eng_bouthainaesmael871]

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[@chandrasekharreddy7611]

Sir where is other half of OS syllabus

[@priyankabharti4587]

thanku sir

[@shaiksanam2984]

Sir just we can go through your examples and explanation part

[@eraykabalak4275]

ı think in the job queue we are holdings programs, not processes.

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If anyone done the report about this process scheduling topic plzz sent it guys...

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By the whims of a system error, the transaction was sent to an invalid email address.

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[@someone4860]

for me it doesnot make any sense that Output process again enter in ready queue after competing it task. Should it go there just to let cpu Know that they are fisnish with their task🤔

[@hogarthrs3795]

so what is different between time sahring and context switching you said that time sharing swtich the cpu among process but i searched and it was changing users not process
context switch is what switch between process so can you explain because i'm confused

[@UCHS_CH]

Examples where processor need I/o device's

[@clashingtv2527]

This concept is similar to interrupt

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👍

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[@arashpardeepsingh1551]

Who do this process scheduling

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Os designer or computer architect or system designer 😎😎😊😊😊

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Present sir

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Operating System Concept the books you use as a resource for preparation of this video

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More videos

[@Brainfcked-r7s]

2:28 How isn't the computer slowed down while it's happening?

[@TradingTales]

Because of multithreding and fast processor

[@Akash-cq3ut]

5:50

[@georgiarose818]

Ready Queue same meaning with ready state right? 😅

[@aronquemarr7434]

Process in the ready state will be present in the ready queue.

[@georgiarose818]

@@aronquemarr7434 so it's the same thing..right?

[@aronquemarr7434]

@@georgiarose818 Not semantically.

[@FoggyYT-dg1rv]

@@georgiarose818 ready queues consist of all the jobs / processes that require the processing time( ie cpu time ) , these jobs or processes are said fo be in a ready state , ie ready to use the processor and if they’re not too large or if they only require input and output , if criteria is met they are then placed in queues based on their priority levels to see which ready job is to be allotted time with the processor first based on fifo

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You have a better accent than other Indians' irritating English accents.

[@123gregery]

The hardest part was to hear the presenter mispronounce the word "scheduling". My ears are hurting. Beyond that, the lectures are a gain to my understanding of how computers work.

[@Explore-Fashioninlife]

At 4 : 00
Second sentence also called as MULTITASKING.
Am I correct ?

[@sakshidherange7554]

ya correct it is also called multitasking os

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Scheduling queue 5:48

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,🤗

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where is deadlock 🙁😧😧topic

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Why do I hear sounds in the background ?
I can hear tv sounds😂