Context Switch

Operating System: Context Switch
Topics discussed:
Context Switching: This lecture explains about context switching, when does it happen and what is its purpose in an Operating System.
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Music:
Axol x Alex Skrindo - You [NCS Release]
#OperatingSystemByNeso #os #OperatingSystem #ContextSwitch

[@kifkifa56]

I really liked the example related to MOTHER.

[@ayzikdig1983]

universally relatable

[@harrychoy2487]

same here

[@NomiSNotFound]

Sad truth: Batman can never get the real meaning of the context switching.

[@gamezine8374]

I loved how you introduced helping the mother as a higher priority task. It really is. Thanks for the wonderful course on OS, friend. :)

[@rr.in.the.cosmos]

😁😁😁😁

[@quratraja7391]

So, context switching is: when a process is being run by the processor, another process of higher priority called interrupt interrupts the process. In this case the state of prucess being interrupted is saved and CPU is assigned to processor. Once that interrupted is handled and executed, the preciously running process that was suspended is again resmed by the processor. This is called context switching.

[@MDASIF-wo7ck]

Thanks

[@AnandSharma-lt8wq]

Or the process time quantum is finished
Or it goes for I/O
Or it terminates due to error or just completes the instruction
Then also context switch happens

[@mallikajay631]

Thanks!

[@Mr_Memer01_]

Fantastic 🤩

[@adityamandhare5117]

Nice explaination ❤

[@hoangminhchau2187]

When a process is running and being interrupted by another higher-priority process, the context of the current running process is saved into its PCB.
The task of saving the state of the current running process and restore the state of another process is called context switching.
Context switching time is an overhead, because the system does nothing usefull while switching (no process in execution)
Context switching time varies from machine to machine. It depends on the memory speed. Typical speed is about few ms.

[@amarioForester]

Those are great metaphors that you use in your videos! Really helpful in memorizing the main aspects. Thank you for the great content!

[@sanjusaini4960]

just like always,you are serving a good content and examples to help students understang the things thoroughly
thanku NESO ACADEMY

[@gayathrikodakandla2258]

I have exam tomorrow and sir your explanation made me learn OS easily.i thought these all are tough but it much easier after listening you.thank u so much sir🙂

[@jongpac2]

perfect and I really admire your lecture, I really regret seeing this video just before the final but, this is great to know this channel!

[@payrollpauly69]

I am so grateful for these videos, thank you forever!

[@randomcat5262]

Since the last video was on process scheduling, I decided to schedule the process of watching this video next. When I clicked on it, however, I noticed that I went through a context switch by going from one task to another.

[@tattiz]

Lol🤸😅

[@01.abhishekkumar33]

Sir each and every word you speak has some deep meaning in it ,loving the journey of operating system with you sir

[@underratededits35]

Hey bro/sis, I'm really confused with the difference between state saving and restoring, aren't them the same ?, please help me understanding it

[@omnikharge6505]

Very very very much thank you @NesoAcademy. Your teaching skills are brilliant. Keep doing, it's a very good thing.

[@startrek3779]

The example is very vivid! Bro you really did a great job. Plz keep going.

[@bapanghosh166]

Neso academy is the one and only channel where we can learn cmsa properly

[@arzookothariya7595]

Thank you so much neso academy for neat & clean explanation about operating system concepts..

[@Surajrawat-xx1gw]

I am very thankful to u man u done a great job every single word you said is understandable so again a big thnku from my side i wish u will get all the happiness u want

[@ManzoorHussain-gz1vk]

Thank you, Sir, your videos makes me love computer science.

[@intfamous4001]

Great videos, even greater playlist. Really well done, thanks

[@ram_pande8039]

The examples you give are really awesome 🙌

[@ayushiyadav1]

first time got the clarity of what exactly context switching is.

[@gaurav45750]

great video, very well explained. It would be great if you can share an index that lists all the topics that will be covered in OS playlist.

[@jyotipundir3794]

All my doubts are cleared. Thanks a lot Sir. It is really very useful. Thanku

[@hyderabadperlmongers3654]

Excellent analogy for Context Switch and Nice explanation.

[@pratikdharam3445]

Love the way Of Explanation ❤️‍🔥

[@balbahadursingh7671]

Really helpful...I liked the real life example which you gave in this video..plz cover all concepts of operating system...tq..

[@Anakanueva]

Amazing Class! Thank you from Brazil. Your channel is excellent guys, thank you :D

[@gunjanjarawat8304]

amazing , makes it so much easier to understand..

[@SamanWithanage]

Good explanation with suitable example... It's so simple and clear.. Thank you...

[@santoshnarwad3528]

Thank you so much sir for understanding such topics and the real life application are more helpful to understand

[@farahmohamed2104]

thanks for the information

[@Joshi_0821]

The real life example you just described here.. 👏👏

[@tadiwanashemuzite9568]

Thanks a lot ...really helped...much appreciated 😊

[@priyanshvatsal9791]

What an example given 🔥

[@reyy9220]

dude ur the best thank u fr

[@123gregery]

Nice example sir

[@laharibasu9731]

Thanks for everything Sir. 😇❣️

[@tinashechinamasa6684]

Using your example the PCB is the book mark ?

[@reeteshtiwari5257]

Very well and concisely explained!

[@rejebdendir]

Great introduction. thanks!

[@bikdigdaddy]

thank you.

[@anmolkhajuria2445]

LOVED YOUR CONTENT BROTHER IT HELPED ME A LOT DONT KNOW WAY HOW TO THANK YOU BUT THANK YOU BRO 😍🙏🙏🙏

[@allanonyango6447]

Thank you for this unambiguous explanation...It cleared my doubt

[@kajalmishra6895]

Thank You Sir...

[@snehalraynade1008]

Thank u very much..... Ur teaching skill is very good....

[@ChiLL0uTx]

Thanks man, i have an exam on thursday and you helped me a lot. Thank you !

[@panchmishali3225]

Nice way explained like it :)

[@underratededits35]

Hey bro/sis, I'm really confused with the difference between state saving and restoring, aren't them the same ?, please help me understanding it

[@lishasaini6657]

I LOVE NESO ACADEMY.....

[@Adam-gp3ij]

Best explanations ever! thanks a lot

[@romann0ob751]

Really nice and easy explanation thank you ❤

[@wasima.4599]

always helpful especially in exam time..🥰

[@DanielMarin-tutorials]

But this context switching happens per Processing Unit, right? when you say that the processor is not doing anything while switching you mean the specific processing unit (in case there is multithreading), right?

[@shabanarashid5827]

Thanks alot sir best explanation ever💗

[@dhanushsivajaya1356]

Thankyou sir

[@clashingtv2527]

After watching 20th video i have more confidence in English cause i seeing this video in 2x but sill it's Cristal clear ❤️❤️❤️❤️❤️

[@albertd.bangura3794]

You are great! Thank you.

[@ajaysukumar5323]

great video ..plz add notes for rest of the modules too

[@khoa12tvuang49]

Thank you sir!!!

[@zahid_9217]

Thank you so much dear teacher

[@fkaspow]

thank you a lot, it is all perfectly clear now.

[@owaissadiq9050]

Great brother.

[@isaiasyoyo]

Grazie millionie!

[@syedhabeebuddin101]

thanks

[@samarthtandale9121]

Great video! Tip, watch in 1.5 x speed

[@melvyntie8391]

Great video. Thank you SOOOO MUCHHH

[@agnoia3236]

10 minutes video and you could explained it in 4 minutes oh my god

[@rakshitjambavalikar7101]

If helping mother is another process, then is there any switch in core of the computer or same core is being used

[@meenalphartiyal1548]

I have a doubt. So, a few lectures back (in System Call Lecture) we learnt that the switching done by a process to switch from User mode to Kernel mode or kernel mode to User mode is known as context switching. And in this lecture we learnt that when a running process is interrupted by a higher priority process then, the state of process being interrupted is saved. Once that interruption is handled, the preciously running process is again resumed. This is called context switching. How the two context switching different? Or are these same?

[@snehagupta1044]

same doubt did you got the ans

[@meenalphartiyal1548]

@@snehagupta1044 no. I think they don't reply to old videos anymore.

[@snehagupta1044]

@@meenalphartiyal1548 yeah may be but by surfing over the net I think the current definition is correct not the previous one

[@underratededits35]

Yeah you were right guys I just checked that video and foud a top liked comment which seems everone agree with, The comment says that "switching from kernel to user and vice versa is known as mode shifting not context switch. Context switch is the one which happens between 2 processes " .

[@RaHuL-sb6uo]

1st view, 1st like, 1st comment 😉

[@zes3813]

wr

[@balajiannamalai5902]

But in one of the previous video he said context switching is about changing from user mode to kernel mode and vice versa......in this video he contradicted it...i don't know someone explain please

[@starboy6514]

It's mode shifting

[@Arjun69]

Thanku so much.

[@fayyazmujahid7236]

Thanks a lot ..

[@DigitalPaintingRecords]

context switches are a major factor is systems

[@amalsakkoumi1392]

Thank uu a lot
❤❤❤❤❤

[@underratededits35]

Hey guys I'm really confused with the difference between state saving and restoring, aren't them the same ?

[@mrobertson937]

No, they are not same

[@elearno1580]

State saving here implies saving the state of previously executing process in PCB so that when the cpu come after completing the execution of the interrupting process it continue the execution of the process from the point where it resumes.
While state restore referes to restoring the state of the new interrupting task so that cpu starts its execution.
Hope it helps!

[@herrogamer2606]

Awesome!!!

[@veereshsanadi9802]

Content and context switch is same?

[@akindu8367]

[@akashverma429]

Greattt !!!

[@f.j.bradman1761]

😃💖t'hanks for sharing

[@hebaibrahim3010]

when you say "in the previous lecture we talked about something" can you please put the link in the description for the previous video

[@melaniemolifie2534]

And/or a link to the next consecutive video. I have to search for days 😵

[@ale-hl8pg]

...was the playlist not there a month ago?

[@RK003]

Playlist is available on the channel main page. Once check

[@shadid2010]

my mother interrupted me while running this process of this video

[@ContextSwitch]

holy cow

[@gluonic]

holy cow

[@snowiblind]

do you code

[@shaziyasultana4373]

Sir upload the videos on computing environment plz

[@sakilhabibsardar4476]

Sir please start electromagnetism.please

[@shalip]

i'm pretty sure that you have a mistake regarding the typical speeds of context switches. i belive they are in the range of microsec (not millisec).

[@codechannel2145]

1hr lec in clg vs 10 min here 😅

[@charlesAcmen]

Mom:YuanMeng!
Me:A?
5 secs silence
Me:MA?
ME:MAAAAAA?

[@mahendrakoshti1715]

Present sir

[@shanthiyasekar7317]

who is responsible for doing context swichting?

[@_Omni]

You do it in the kernel

[@OwenValentine]

is nobody going to mention the use of comic sans in this video?

[@dev.rahulgurjar]

👍👍👍

[@charan775]

process quantums are itself in milliseconds don't think context-switch will take milliseconds

[@gavin8535]

I wonder why it is not called process switch.

[@sukanyakumari0153]

Thankyou so much sir... 😇

[@_Omni]

You are switching "context", you go from ring 3 to ring 0 or the other way around

[@randomcat5262]

ningning liu

[@ridoyasaduzzaman5904]

i hope i get a son like you

[@zes3813]

wrrr

[@bennetttan8535]

HAHHAHAHA good explanation ahahhaahha

[@punittripathi5461]

Mother calling is never an interrupt. How dare u 😂

[@jaredomariba3800]

You are just jumping for something you did not get the content.

[@saidattnaik1967]

So my mom calling me to clean toilet 🚻 is more important then reading 📚 books ????