All Questions
Tagged with os or operating-systems
232 questions
4
votes
1
answer
318
views
Are contiguous objects contiguous in virtual memory or physical?
More or less what the title says.
Suppose we have a sequential container like vector in c++ that will store data contiguously.
When we say that the data is stored contiguously do we mean that it's ...
- 179
7
votes
2
answers
356
views
Why GUID Partition Table data lack the sector size?
The GPT (GUID Partition Table) is the most accepted modern standard for partitioning of a data storage device. Its unit for the offset and size of a partition is so-called sector*. Is it a well-...
- 179
6
votes
2
answers
574
views
How is async implemented natively?
How is async logic implemented natively without threads? What would be the high level structure of the system?
Is it just a separate OS thread that gets and pushes requests and results in 2 queues?
I ...
- 179
2
votes
2
answers
256
views
Operating systems - whose responsibility is it to coordinate process I/O requests?
I am reading Tanenbaum's Modern Operating Systems. I want to understand a particular concept regarding processes and blocking system calls, specifically with regards to I/O. I assume threads might ...
- 396
1
vote
3
answers
1k
views
Still confused why a monolithic operating system is faster than a layered operating system
In the book Operating System Concepts,
In the summary it states:
A monolithic operating system has no structure; all functionality is provided in a single, static binary file that runs in a single ...
- 279
0
votes
7
answers
2k
views
Within the same computer, what is the difference between API and IPC?
So, an Application Programming Interface is a way for two or more computer programs to communicate with each other.
An application programming interface (API) is a way for two or more
computer ...
- 159
-1
votes
1
answer
219
views
System Monitor vs Operating System [closed]
I'm having a tough time finding the distinction between the two.
My understanding is that "operating system" refers to a more abstracted job monitor with extended functionality (e.g. task-...
- 3
33
votes
7
answers
8k
views
Why do modern operating systems *ever* have perceptible input (keyboard/mouse) lag?
Sometimes computers stutter a bit when they're working hard, to the point where the mouse location freezes for a fraction of a second, or stutters intermittently for a few seconds. This sometimes ...
- 449
-1
votes
2
answers
1k
views
Dealing with multiple application instances
I'm developing an application (Java & JavaFX) that writes/reads data (a file). The problem is I don't want to restrict user to run only one instance (of my app) at a time, as I really can't think ...
- 33
-4
votes
1
answer
199
views
How do different operating systems have different window layouts? [closed]
I have searched on the Internet on how do operating systems have different window layouts, but I have found nothing. Windows has one style, Mac OS has another, and Linux has a different style as well. ...
- 103
-2
votes
2
answers
364
views
Isn't OS dependent on machines, can anyone briefly explain how it is achieved? [closed]
Certain OS in it's system requirement doesn't specify anything peculiar like in case of ubuntu it asks only for "2 GHz dual core processor or better". If yes, how does it compares with ...
- 107
24
votes
5
answers
7k
views
Where did usage of OS signals go?
From what books I read on linux system programming, it seems like signals were the primary way to communicate events between processes. They were the gateway into many interesting functionalities, ...
- 582
0
votes
2
answers
413
views
Building a program that truly deletes everything
We all know that if we delete a file, the operating system is recycling it but doesn't actually delete it. It just removes it from the directory indexes, and until the data is needed and overwritten, ...
- 127
2
votes
3
answers
257
views
Is ABI governed by hardware or is it only an agreement between software
ABI (Application binary interface) defines things like caller and callee saved registers, stack use, register use, end-of-routine stack pop etc.
Is ABI only an agreement between compilers and other ...
- 21
0
votes
3
answers
236
views
Sysadmin password storing
I'm quite unexperienced in the sysadmin area. Now I'm facing the responsability of managing two (remote) servers. I'm working in an informal organization.
So I have passwords for the OS's users, ...
