difference between IO-APIC-fasteoi and IO-APIC-edge

interrupt
robertchen picture robertchen · Aug 10, 2011 · Viewed 9.6k times · Source

In /proc/interrupts, I can see that some interrupt numbers belong to IO-APIC-fasteoi and some belong to IO-APIC-edge.

What is the difference between the two types of interrupt controllers?

Answer

Chris picture Chris · Oct 24, 2011

The difference lies in the way the interrupts are triggered. The -edge interrupt are edge triggered. This is a rising level on the interrupt line. The -fasteoi interrupts are level interrupts that are triggered until the interrupt event is acknowledged in the programmable interrupt controller (PIC). The EOI stands for End Of Interrupt. See also Wikipedia article on EOI.

Related questions

How do you kill a Thread in Java?

How do you kill a java.lang.Thread in Java?

Read More
What is the difference between Trap and Interrupt?

What is the difference between Trap and Interrupt? If the terminology is different for different systems, then what do they mean on x86?

Read More
How a thread should close itself in Java?

This is a short question. At some point my thread understand that it should suicide. What is the best way to do it: Thread.currentThread().interrupt(); return; By the way, why in the first case we need to use currentThread? …

Read More