Check my understanding, please. CPU/Interupt/Cache/Memory

Google · 2010-07-21 07:21:18

Is this correct?

Program executes/begins ---> interrupt is sent to the CPU 
                                                   |
                                                   |
                                                   V
                                                CPU places program in main memory, with a pointer pointing
                                                  back to the location where the interrupt came from (the int main() in a
                                                   C/C++ program?) 
                                                   |
                                                   |
                                                   V
                                                 CPU begins to load variables/data into the cache that the program
                                                   needs, if/when the program slows down due to disk speed or waiting
                                                   for something, the CPU will then go to the next program on the 
                                                   program counter, until the next time to returns to the program on the 
                                                   program counter. 
                                                   |
                                                   |
                                                   V
                                                  The CPU juggles programs on the program counter until they finish or 
                                                    halt due to an error or something. When a program finishes or is 
                                                    trapped, the program will end and the memory freed.

baion baion · 2010-07-21 17:26:06

That is correct if all you are looking for is a brief version of the whole process (or should I say cycle?). However things can get much more complicated, and there can be exceptions. However as far as basic understanding goes you have a correct image in your head.
I am not a computer scientist so there might be some things that I might be missing.

Trent · 2010-07-21 18:01:59

Preemptive multitasking, for one.

It's a fairly accurate overview.

Cerebral · 2010-07-21 18:39:14

Note that program loading and scheduling generally isn't built into the CPU itself - it's actually the operating system (kernel) that manages all of the scheduling ("juggling") of programs.

Google · 2010-07-21 23:26:28

Thanks! I have been reading some fairly complex books on operating systems and wanted to see how well I understood the cycle. I hope to keep expanding what I know. It's very interesting

SoleSoul · 2010-07-21 23:39:53

You know the book "Operating System Concepts" by Abraham Silberschatz, Peter B. Galvin, Greg Gagne?
It's quite good.

Google · 2010-07-22 00:15:58

That's the main book I am reading, it's fantastic. It moves pretty fast and treats the reader like they know what's going on, which is great. I just need to double check my understanding because the book progresses quickly haha

PirateJonno · 2010-07-22 05:06:53

I have that book for a course I'm doing this semester! I wasn't sure if it was worth the money but now I think I might get it

wu.soldier · 2010-07-22 15:05:43

SoleSoul wrote:

You know the book "Operating System Concepts" by Abraham Silberschatz, Peter B. Galvin, Greg Gagne?
It's quite good.

I can also recommend: "Operating Systems Internals and Design Principles" and "Computer Organization and Architecture", both by W. Stallings.

Google · 2010-07-22 23:17:57

Thanks, I will look them both up

raf_kig · 2010-07-23 19:50:24

If we are talking OS books then there is one that certainly mustn't go unmentioned.

Tanenbaums Modern Operation Systems

Yes, the author is "Linux is obsolete" Andrew S Tanenbaum, and I can really recommend reading his book :-)

Arch Linux

#1 2010-07-21 07:21:18

Check my understanding, please. CPU/Interupt/Cache/Memory

#2 2010-07-21 17:26:06

Re: Check my understanding, please. CPU/Interupt/Cache/Memory

#3 2010-07-21 18:01:59

Re: Check my understanding, please. CPU/Interupt/Cache/Memory

#4 2010-07-21 18:39:14

Re: Check my understanding, please. CPU/Interupt/Cache/Memory

#5 2010-07-21 23:26:28

Re: Check my understanding, please. CPU/Interupt/Cache/Memory

#6 2010-07-21 23:39:53

Re: Check my understanding, please. CPU/Interupt/Cache/Memory

#7 2010-07-22 00:15:58

Re: Check my understanding, please. CPU/Interupt/Cache/Memory

#8 2010-07-22 05:06:53

Re: Check my understanding, please. CPU/Interupt/Cache/Memory

#9 2010-07-22 15:05:43

Re: Check my understanding, please. CPU/Interupt/Cache/Memory

#10 2010-07-22 23:17:57

Re: Check my understanding, please. CPU/Interupt/Cache/Memory

#11 2010-07-23 19:50:24

Re: Check my understanding, please. CPU/Interupt/Cache/Memory

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