Dear Neso Academy, please add all of the necessary videos. Many students including myself will begin our Operating Systems course next month. Your videos are very valuable and the community truly appreciates them. Thank you!
Good explanation. So, a process in execution can create sub processes forming parent child relation. For parent process, there exist two possibilities, either it can run concurrently with child processes or it can wait for few of the child processes to get their execution complete.
I love the way you teach!! Most professors go over each topic briefly and quickly and I end up not being able to understand, but you go over each topic thoroughly and multiple times so it actually sticks!! Thank you so much!
A process can create new processes via a create-process system call. The creating process is called parent process, the sub processes are called children process. The children process can create their own children processes, forming a processes tree. 2 possibilities for execution when a process create their children processes: - It execute concurrently with its children processes - It waits for some or all of its children finished execution When a new process is being created, it can take all or part of its parent resources. If it takes all resources, the parent will have to wait for its completion. If it take part of the resources, the parent may execute concurrently with it. 2 possibilites of address space for the new process: - The children have the same program and data as their parent (duplicate of its parent) - The children load a new program
A child process may get its resources from the parent process or the Operating system. But restricting the child process to a subset of parent processes will be idle, and prevent any process from overloading the system by creating a lot of sub-processes. If all child or children processes get their resources directly from the Operating system, this will overload the operating system.
Yes, Concurrency can be achieved in a single-core processor through Multiprogramming. "Concurrency" does not necessarily mean " two processes executing or running at the same time or simultaneously". In multiprogramming, The operating system switches rapidly between the multiple programs that have been loaded on the main memory. So we can say, the two blocks of programs' instructions are interleaved. The processor in this case alternates which programm is running. But because it does it quickly, the concurrency achieved by multiprogramming creates an illusion of parallel execution or "Pallelism". But it is not executing the processes at the same time but rather one at a time. "Semantic model "is the method of organization of data that represents the basic meaning of the data items and the relationship between them. "Interleaved" is the semantic model for concurrent execution, in which the instructions of multiple entities are executed one at a time rather than in parallel. but the system switches back and forth between the entities in a non-deterministic fashion.
Dear Neso Academy, please add all of the necessary videos. Many students including myself will begin our Operating Systems course next month. Your videos are very valuable and the community truly appreciates them. Thank you!
Are you majoring in computer science?
That's impossible bro
This is business
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Good explanation.
So, a process in execution can create sub processes forming parent child relation. For parent process, there exist two possibilities, either it can run concurrently with child processes or it can wait for few of the child processes to get their execution complete.
I love the way you teach!! Most professors go over each topic briefly and quickly and I end up not being able to understand, but you go over each topic thoroughly and multiple times so it actually sticks!! Thank you so much!
Sir, could you please upload the remaining topics video as soon as possible. The way you explain its awesome. Eagerly waiting for rest of the videos.
Neso Academy, thank you sir.
Great lecture, thanks 🙏
another good video, thank you.
sir thanks for good explanation
October 2021 and watching. Thanks Neso.
U r A Great TeachEr..
Keep it up 👆
Thank you so much for hardwork. Your videos are better than ravindra babu ravula videos. Please make such videos so that It will be useful for gate
Please upload the other videos... Thank you so much
I love your teaching style
Thankyou sir
thanksss ❤❤
excellent explanation
Great! Thanks!
Thank you
This was a good one
Waiting for more usefull videos...
thank you !
What would be the purpose of having child process as a duplicate of a parent process with same program and data in a single core system?
great explanation
A process can create new processes via a create-process system call.
The creating process is called parent process, the sub processes are called children process.
The children process can create their own children processes, forming a processes tree.
2 possibilities for execution when a process create their children processes:
- It execute concurrently with its children processes
- It waits for some or all of its children finished execution
When a new process is being created, it can take all or part of its parent resources. If it takes all resources, the parent will have to wait for its completion. If it take part of the resources, the parent may execute concurrently with it.
2 possibilites of address space for the new process:
- The children have the same program and data as their parent (duplicate of its parent)
- The children load a new program
SIR PLEASE CREATE PROCESS TERMINATION AND ALSO INTER PROCESS COMMUNICATION
What is the need of creating new processes?
is the child process not supposed to get the id 0 when you call fork though?
emacs pid = 8105 or 8108 ? in textbook it has 8105
Sir is Process Hierarchy similar to this?
❤️
can't a child process use resources other than those of the parent process?
Also , which book are you referring to for the lectures
A child process can also refer to resources from the operating system and not from the parent process
A child process may get its resources from the parent process or the Operating system.
But restricting the child process to a subset of parent processes will be idle, and prevent any process from overloading the system by creating a lot of sub-processes.
If all child or children processes get their resources directly from the Operating system, this will overload the operating system.
Sir, I request you to provide further video lectures of operating system.
Sir please upload further topics related to os
can we have concurrency on the single processor system? i.e. tow processes running at the same time on single processor system
Yes, Concurrency can be achieved in a single-core processor through Multiprogramming. "Concurrency" does not necessarily mean " two processes executing or running at the same time or simultaneously".
In multiprogramming, The operating system switches rapidly between the multiple programs that have been loaded on the main memory. So we can say, the two blocks of programs' instructions are interleaved. The processor in this case alternates which programm is running. But because it does it quickly, the concurrency achieved by multiprogramming creates an illusion of parallel execution or "Pallelism". But it is not executing the processes at the same time but rather one at a time.
"Semantic model "is the method of organization of data that represents the basic meaning of the data items and the relationship between them.
"Interleaved" is the semantic model for concurrent execution, in which the instructions of multiple entities are executed one at a time rather than in parallel. but the system switches back and forth between the entities in a non-deterministic fashion.
Pls youtube don't show bts adv. In middle 😣 that breaks my studying mood😂
please upload the upcoming videos
GG
u read every line 3 times and you are saying the same stuff
So boooooooooring
Neso academy is back with all its power ❤
Lots of love and respect 🙌🙏
GG