Hi, Rafael Vanoni píše v po 03. 01. 2011 v 17:00 -0200: > On 01/ 3/11 03:24 PM, Dana Myers wrote: > > On 12/31/2010 9:33 AM, John Martin wrote: > >> Ever since upgrading from b154 to b155 my power meter shows > >> the average power use for an idle desktop to be about 20W higher and > >> the power level jumps around quite a bit with swings as high > >> as an additional 50W. Any known causes? Typical PowerTOP output: > > I did a quick comparison of b154 to b155 on my Intel DX58SO + Core i7-920 > > system. Idle desktop power use was 114W with either build - no change. > > > > Increased CPU utilization is the first thing I'd look for; I'd also take a > > look at the devices in the system and see if there were any driver > > changes which may change device behavior. > > > > Dana > > Device interrupts would show up on powertop(1). I believe there's an > open RFE to extend powertop(1) so it will look at CPU utilization as well.. >
I do not see such RFE. And for "missing" interrupts, I see only CR 6817229. With close to zero activity in userspace, something in kernel must consume 1/4 of CPU. Or could prstat miss some spikes of activity in userland, which are pushing CPU to the highest P- and C-state? Still, is powertop on b154 looking similar in amount of time spend in P- and C-states? Didn't nVidia drivers change between builds? Are these drivers pushing GPU to some sleep mode? Best regards, Milan _______________________________________________ pm-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/pm-discuss
