> Now that I've had a chance to really examine the system, I'm noticing a > rather high interrupt count (1584), and I'm not exactly sure how to figure > out what's triggering them.
i set HZ=1000. so that accounts for 1000 of them. i've also modified /dev/irqalloc to count up the interrupts, so you should get a rough idea of which irqs are responsible. i say rough because chaned interrupts can confuse the matter a bit. > I did not install venti. I just configured my ip address for DHCP, and I've > got aux/timesync running (I think that was suspect before for some reason). > Stats shows interrupts as a solid rectangle of activity all the time. i get that too from stats. it's just tuned to HZ=100. the reason for the increase is so that millisecond sleeps can work a bit better. on all the systems i use, the overhead is not worth worring about. - erik