Hi Aubrey, Li, Aubrey wrote: > Hi Eric, > > I got the following report from PowerTOP after cyclic event was added. > > =====snip====== > Wakeups-from-idle per second: 392.5 interval: 5.0s > Top causes for wakeups: > 25.5% (100.1) <kernel> :unix`cbe_hres_tick > 25.5% (100.1) <kernel> :genunix`clock > 25.5% (100.1) <kernel> :genunix`cyclic_timer > 19.1% ( 74.9) <kernel> > :uhci`uhci_handle_root_hub_status_change > 8.5% ( 33.4) <kernel> > :ehci`ehci_handle_root_hub_status_change > 8.4% ( 33.0) java :<scheduled timeout expiration> > > 2.5% ( 10.0) <kernel> :ata`ghd_timeout > > 1.5% ( 5.8) dtgreet :<scheduled timeout expiration> > > 1.0% ( 4.0) <kernel> :genunix`deadman > > ======snip===== > > This looks confused for me. > > Actually, timer interrupt occurred 100 times per second, from the > report, > We know we have 3 cyclic consumers, but it appears we have 300 times > events. These are 3 separate cyclics each firing at 100 times per second...so it really is 300 events per second. Low hanging fruit indeed. :)
-Eric
