Hi Max/Jim,
Based on your script, I created the following script to print which pid is
interrupted how many times every 2 second. The result shows pid 0 is
interrupted most: about 50k every 2 second, that's 25k per second. How could
it be interrupted so frequently? For the clock interrupt, it
PID 0 isn't really a process. It's the kernel - that's something of an
oversimplification,
but for the purposes of this discussion, just know that pid 0 is not a
process.
Interrupts do not target processes. Devices bind interrupts to CPU at
initialization
time. Use 'echo ::interrupts | mdb -k
