Differences between version 6 and previous revision of IRQ.
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| Newer page: | version 6 | Last edited on Thursday, July 1, 2004 11:23:09 am | by JohnMcPherson | Revert |
| Older page: | version 5 | Last edited on Thursday, July 1, 2004 11:19:29 am | by JohnMcPherson | Revert |
@@ -13,5 +13,7 @@
* Continuously checking (called "polling") to see if the user has pressed a key is very inefficient, so, you get the keyboard controller to trigger an [IRQ] when the user presses a key, notifying the OS that a key has been pressed and it should wander off and do something about it.
On linux, type:
watch --interval 1 cat /proc/interrupts
+or:
+ procinfo -n 1
to see a running count of the number of interrupts your machine has made. (This works best if you run it on your own machine, and not remotely DanielLawson!). Move the mouse, play some sounds, access the hard drive, use the network and see the effect on the counts!
