olemus
(a) katkestamistoiming
ISO/IEC 2382:
protsessi, näiteks programmi täitmise peatamine
protsessivälise sündmuse toimel nii,
et protsess saaks jätkuda
= suspension of a process, such as the execution of a computer program, caused by an event external to that process, and performed in such a way
that the process can be resumed
ISO/IEC/IEEE 24765:
protsessi katkestamine protsessivälise sündmuse käsitluseks
= suspension of a process to handle an event external to the process
https://en.wikipedia.org/wiki/Interrupt
https://en.wikipedia.org/wiki/Inter-processor_interrupt
https://en.wikipedia.org/wiki/Category:Interrupts

(b) katkestussignaal: katkestusnõuet väljendav signaal
= a signal which is sent from a device or from software to the operating system and causing the operating system to temporarily stop what it is doing and service the interrupt
https://en.wikipedia.org/wiki/Interrupt_request_(PC_architecture)
http://www.cs.columbia.edu/~krj/os/lectures/L07-LinuxEvents.pdf

vt ka
- ajutine katkestus
- elektrikatkestus
- katkestus (2)
- katkestusetäitur
- katkestusnõue
- katkepunkt
- sammkatkestus
- süsteemi katkestuse keskmine kestus
- süsteemi katkestuste keskmise kestuse indeks, SAIDI
- ärikatkestus