Computer Interrupts Explained

An interrupt is a signal sent from a device or from software to the operating system.

It causes the OS to temporarily stop what it is doing and service the interrupt, using it’s interrupt handler.

Interrupts are needed for computers to multitask.

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#ComputerScience #Interrupts

[ameliefisher]

Thanks heaps for this video, helped explain this concept a lot better than my over-complicated lecture slides... made it super easy to understand!

[mevinimunaweera]

there is sound problem but explanation is superb + simple.

[roboter]

thank you so much for this video, you cleared me all the blind spots !

[daveyd]

This video was super dope, quick and easy explanation !

[Elektrolite]

I thought that interrupts are sent to the CPU, not the operating system? Via an interrupt pin. The CPU checks for interrupts during the fetch execute cycle. This is how sys calls are done. Have I misunderstood?

[davidjohansson]

I heard about, there is a bug when you use optane drives in linux.(super low latency drives) the cpu slows down reading data from the drive because it’s being overloaded by the drive asking to be serviced before the cpu can service the previous request. Ie. Drive is ”too fast”. Do you know if/how this i related to time counters such as HPET? (Or hardware timers?) is the interrupt handler based on such a timer?

[LuLu-yknw]

firstly this should have been posted on May 17th on my birthday lol
secondly this was so so helpful

[zb]

sound issue but i understood the concept, thanks :)

[livingstoneayo]

So the stopped process will come again as Interrupt.. am I right?

[sabaurooj]

im in computer lab and i cant hear ur voice at all

[wfqka]

how to disable smi interrupts in uefi?

[purityvsprofanity]

eh😅, could you please make the sound better. otherwise great video

[Cjxr]

I hate windows 11. Have my speakers at 85%, full blast on all sliders within windows and I can barely hear this...