Introduction to Threads

[@TechByte8]

Program under execution is called Process. Thread is a basic unit of execution. Each program may have a number of processes associated with it. Each process may have number of threads executing in it. Threads basic unit of CPU utilization. A thread comprises of i) Thread ID ii) Program counter iii) a register set iv) a stack It shares with other threads belonging to same process its i) code section ii) data section iii) other operating system resources like open files and signals

[@MohamadModather99]

Bless you!!

[@Sladostrasni]

Thank u !

[@hoangminhchau2187]

Thread is a basic unit of CPU utilization. It consists of thread id, program counter, register set and stack. A system can have single-threaded or multi-threaded mechanism. Threads within a process share code, data and files between them. They have their own stack and register set. Benefits of multi threaded system: - Responsiveness: user can interact with programs smoothly - Data sharing: memory is shared between threads of a single process - Economy: Creating a new process is costly because the OS need to allocate resources to a process. But the new thread created can use resources of its process. - Utilization of multiprocessors architecture: in a signle threaded system, the multiprocessors mechanism is not useful.

[@amoldangat007]

Thanks , tumne mere 14:05 minutes bacha liye

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[@okwithbeingsolo859]

Yeah...Me too, same here bro

[@DaGlitchMaster]

Man your videos are a Godsend. I have a test next week and this is perfect revision material and so clearly explained. Thank you!

[@kotax]

how was the test ?

[@fetajonathan2247]

Things my University didn't teach me😭..thanks #NesoAcademy. Am now literate on Threads

[@BLG120]

how u doin now?

[@TheYmBProduction]

In most of the computer applications multiprogramming and multi threading are used to improve the response time of the system while performing multiple operations or programs. Multiprogramming is a method of running multiple programs over a single processor by sharing the processor time in the time sharing environment. While multithreading is the process of running multiple threads to execute concurrently, supported by operating system.

[@ronweasley5573]

so one single thread with multiple threads can infact perform diff task? eg if chrome tab is launched 1 process is assigned to it with N no of threads so now if url is requested then that same processes 1 thread is REASSIGNED to it?

[@nischaysharma4922]

@@ronweasley5573 there can only be max of 2 threads in a single core with the help of hype threading otherwise normally it have 1 core and 1 thread in it - remember threads are not as effective as original cores

[@trilecao9014]

Thanks! 1. Single-threading vs. Multi-threading 2. Single core vs. Multi core 3. Multi threads on multi core system increase concurrency.

[@jalalkhankashmiri7501]

tomorrow is my Advance Operating System paper, it was difficult to read slides given by instructor. your video helped a lot. Thank you Sir

[@ateebtaseer5964]

My whole degree courses are the blessing of NESO academy

[@AndyAlfa97]

In OS playlist there are just 55 lectures..and the remaining lectures are not visible to me if you put me in a way to find and access that remaining vedioes then it's be very helpful to me.Thank you sir

[@SajidAli-ub6th]

rest of the videos are for premium users

[@SathishKumar-ux4cv]

Hi. One quick question. What is the maximum threads can able to create by single processor..?

[@saadmanahmed860]

a thread is a basic unit of execution / CPU utilization. execution = cpu utilization

[@footballCartoon91]

@2:07 What do you mean each thread of same process will have to share it's code section, data section, and other os resources such as open files and signals? Do you mean that each of the thread of the same process will use the same memory address in ram? If that's the case how multithreading can be faster? If they use the same address?

[@footballCartoon91]

@3:26 Oh so each thread will have its own stack and register, Meaning different address in ram right?

[@footballCartoon91]

@4:02 What is the code, data, and files That are being shared in a process containing many threads? Is it much like import package files When we want to code in Java? Or maybe include header files in c++? So that we can access the functions or methods written by somebody else?

[@footballCartoon91]

@10:44 And now you says Each thread of the same process will have the same address in ram? So then how it can run faster? Meaning if one thread is using the stack in the ram completely, then another thread will have to wait until the stack has been deleted for the first thread i.e, the first thread has finish execution. Unless the address of the ram is big enough for many threads, then it can have many stacks run together

[@GOODBOY-vt1cf]

5:22

[@林怡君-d2n]

Great video! Very helpful and well-organized. Thank you for the effort making such high-quality content.

[@killerjohny6116]

What is difference between pipelining and multi threading

[@adipratapsinghaps]

Thanks for the register and stack info. Can we dive deep into them? How thread creation happen? How thread switching happens? Deep dive on hardware level?

[@batista98854]

Me too want the same information

[@rayanagoudnadagoudra5411]

sir how to solve and it please it for solving the question Design and implement a program to add two m x n matrices (n>=100 and m>=100). In order to perform the above, two versions of the program need to be implemented, one, a sequential version and the other a concurrent version. The sequential version implements a function to add the two matrices. The concurrent version of the program spawns threads, each thread to add the assigned number of rows. The main thread computes the consolidated output matrix. Perform the following using file management system calls: a. Design and implement the application using sequential approach with functions b. Design and implement the application using multi threaded approach

[@dipeshchandiramani1897]

Very useful content. Thanks a lot!

[@raagavirao856]

Seriously You are the best!!!!🖤🥺 Please do a video on types of hardware multi threading.

[@jutlavasantha4176]

Hi if you could post a video about only tasks,it would be great.

[@sanjay01376]

even with single threaded processes with n processor we can execute many processes at same time right ?

[@mohamadtabbakh9887]

quick question: I Want to know whether the thread information is such thread ID and so on reside in a threat control block (similar to the process control block) or not.

[@imcnx1563]

Hi! when you say data section, code section you mean by that data segment and code segment?

[@IsThisSimulation]

Yes

[@Anas-qh3hk]

title of video: intro to threads every two seconds in the video: we already discussed this in previous videos Hhhh

[@MohamadModather99]

I've been watching your channel for years. You've been helping me through a lot of subjects. Thank you very much. From Syria With love

[@ramadharsingh4860]

Hey god m mechanical wala kis thread me aa gya 😀

[@mayur_madhwani03]

I'm glad that I opened this lecture

[@jsaenzMusic]

Thank you for shedding light on this subject! Very well explained.

[@ayushjain7714]

Don't you think watching a youtube video on a browser is a different process and downloading something on the same browser is another process. You said they are different threads of same process. And I think they are different processes. You made me confused.

[@darthglowball]

That depends on how your browser is programmed. Look at Firefox, it spawns 11 processes named "firefox.exe" for god knows what and each process has many threads. At least on my windows 7 pc. It's up to you to figure out if downloading and KZbin are threads in the same process.

[@ayushjain7714]

@@darthglowball That is what confusing me lol. I can't figure it out.

[@aerosol9021]

@@ayushjain7714 Do you know how it works by now?

[@ayushjain7714]

@@aerosol9021 No I don't know yet. Please explain. 🙂

[@Arjun69]

Simply Brilliant.

[@coding_unicorn2]

Easy to understand😊

[@aakashmehta9474]

Seriously nailed it the level info provided in video is unmatchable

[@techblast7176]

If i would be able to learn with this language [not english its about the way or using of words ] i would have understood from my material useless ❌❌

[@_the__hash_24]

A thread is a lightweight process, not a high weight.

[@Bigeinla]

Thanks for the video. Great presentation.

[@noelatum8692]

you are an amazing teacher. this was so helpful, thank you.

[@delpro3735]

Can you explain how those threads you are talking about relate to threads in CPUs? For example, when Intel promotes some CPU it says e.g. it has 4 core and 6 threads. What are those 6 threads actually? People on the internet write all kinds of confusing and misleading stuff...

[@kornelijussliubauskas8299]

With having some general knowledge of CPU and threads I would assume that even though it's called concurrency these calculations using multithreading are being made sequentially, because I can't imagine CPU running multiple calculations simultaneously as it doesn't have multiple ALU's and so on.. if i'm wrong please correct me, and thus I believe no one cares about this it would be fun to know

[@arnav_0397]

aahhhh! I was land on exact video I was looking for. Very well Explained

[@itbepolicy6007]

Note to self 0:20 "Program" here, seems to mean application--like what a user thinks of as a program: Word, Chrome. Judging by 4:20 and what I've been shown in earlier videos, I think that would make a process equivalent to a executable file within Word of Chrome. Or by "program" do you bymean each executable file can be, somehow put into working memory in many places at once--and each of those places in working memory is called a process? [I think the word "program", like many words in computer science, seems to have different meanings that I have to be careful about understanding depending on what's being discussed.]

[@gatecomputerscience1484]

/* Thanks sir ,such a amazing course */

[@Ryukushinn]

Nice

[@yeongwooh4921]

Reference book: Concept of OS

[@justjoking9093]

Operating System Concepts Essentials, 2nd Edition

[@AS-ne5wu]

This was extremely helpful, I found an idea that I can implement into my small programs to make them work faster. Thanks a lot!

[@mahmoudmahany3489]

I rarely comment on videos, but I'm grateful that I found this channel. Thank you so much for your hard work and contribution :)

[@ayushiyadav1]

13:53 thankyou soo soo much sir. It's crystal clear ❤❤

[@prathvisingh8288]

Suppose there is a process where the output of task-1 is the input of task-2 & the output of task-2 is the input of task-3 & so on. Will multi-threading be useful for such a process?

[@aminesaber467]

Yes, multi-threading can be useful for such a process. By using multi-threading, each task can be executed concurrently in a separate thread, which can improve the overall performance of the process. This can be especially useful if some tasks take longer to execute than others, as it can prevent the entire process from being slowed down by a single slow task. However, careful consideration must be given to ensure that the tasks are executed in the correct order and that any dependencies between them are properly managed.

[@oliver99999-e]

very well explained!!! thanks

[@bfilma]

Thank you so much!

[@lindsey5236]

I always get confused of those topics, thank you so much for your explaination, you are my life saver !!!!

[@abhishekvashisth8314]

the example made it very easy to understand thanks

[@abhishekpatil922]

Thank you I passed 5th sem 😁😅😕

[@yoganandareddy4721]

This is the best way of explaining.....tq very much

[@tabbytabrez6767]

Could you please upload some videos on CPU load average in Linux.

[@esra4281]

you are the best i hope you good and happy life

[@chenzhou9575]

Very well explained, thank you!

[@z.kjadoon9990]

what are the benefits of multiprocessor system for a single threaded process?

[@LilMartyFarty]

none, I'd assume? If you have multiple processors and you're running a single threaded process, only one processor can run this process.. leaving the other 3 CPU's to be doing nothing.

[@_________________404]

Advantage would be that it should in theory still be faster because the CPU can use some of it's other cores for running the OS and for other processes, so it should then use the core that is used the least to run your process.

[@z.kjadoon9990]

@@LilMartyFarty thanks

[@z.kjadoon9990]

@@_________________404 thanks

[@bodapatisujatha4181]

Hi sir, can u please Explain about RTOS

[@exploreuniverse4729]

these notes are copied from virtual university of pakistan notes.

[@nesoacademy]

The notes are not a copy from anywhere, and we have taken them from the classic book named "Operating System Concepts by Galvin."

[@exploreuniverse4729]

@@nesoacademy then my university copied these notes from this book. Every thing is same even wording.

[@exploreuniverse4729]

@@nesoacademy but you explained very well.

[@GOODBOY-vt1cf]

2:30

[@priyankabharti4587]

thanku sir, also i have cleared about the multi processor , that if there will be multi processor in the system then how multiple thread will work in that case.

[@shaziyasultana4373]

Sir upload the video on computing environment

[@GOODBOY-vt1cf]

0:24

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Amazing😇tq so mch😊

[@ashantharindu4660]

Thank you!! Greatly explained

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[@ezatullahjunbesh9979]

Well explanation, thanks so much

[@prensudangol1547]

finally got it

[@bashscript2805]

good introduction video i love it, thanks

[@manikantamaddipati1090]

Question : How many Threads we will having on native os : May be 1,but how many max we can go? untill the memory allocated to process by os filled up?

[@killerjohny6116]

That depends on your processor .. if a processor has 2 cores it can process up to 4 threads at a time.. go and search for cores and threads of CPUs for further info

[@aminesaber467]

the number of threads that can be created on a native operating system depends on various factors such as the hardware configuration, operating system architecture, and system resources available. The number of threads can also be limited by the operating system itself or by the application that is creating the threads. Therefore, the number of threads that can be created on a native operating system can vary widely depending on the specific system and its configuration.

[@AndyAlfa97]

Thanks for uploading the useful informational vedioes. It's really help us 😊

[@oshadhaedirisinghe1455]

Thank you

[@dhruvburada5391]

Thank you for your efforts

[@AlifKhan-fd5ch]

Best way of explaining ❤️ thanks a lot

[@leandrawoods8568]

1:55 2:30 13:36

[@IFYatharthAurangpureIT]

Best Explanation ❤

[@alaaageela1174]

very nice explanation

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[@faizurahmanjamshedi7300]

well explanation

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thanks for info.

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[@Shunya_Advait]

Thank You Sir😃

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Nice sir😇😇

[@farahmohamed2104]

well explained

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Thank you!