ath / 802.11n performance issues and timer code

[Adrian Chadd]

I'll get you a trace soon.

I noticed a much smaller but valid looking effect when doing this on
my eeepc. If I enable idletick, I get an extra 15-25mbit/sec 11n TX
throughput.

kern.eventtimer.choice: LAPIC(400) i8254(100) RTC(0)
kern.eventtimer.et.LAPIC.flags: 15
kern.eventtimer.et.LAPIC.frequency: 35003954
kern.eventtimer.et.LAPIC.quality: 400
kern.eventtimer.et.i8254.flags: 1
kern.eventtimer.et.i8254.frequency: 1193182
kern.eventtimer.et.i8254.quality: 100
kern.eventtimer.et.RTC.flags: 17
kern.eventtimer.et.RTC.frequency: 32768
kern.eventtimer.et.RTC.quality: 0
kern.eventtimer.periodic: 0
kern.eventtimer.timer: LAPIC
kern.eventtimer.idletick: 1
kern.eventtimer.singlemul: 4

That's running r222417 -HEAD though.

Thanks,


adrian