Re: Make CPU use the C2 state

2014-01-18 Thread John Rogers
On Mon, Jan 13, 2014 at 9:20 AM, Philip Guenther wrote: > C0 is the only state where the CPU does real work; the higher C-states > only make sense for when the CPU is idle, so your question presumably > is "does the CPU get put into a higher C-state when idle". Well, > 5.4-current uses the MWAIT

Re: Make CPU use the C2 state

2014-01-12 Thread John Rogers
On Mon, Jan 13, 2014 at 4:10 AM, Juan Francisco Cantero Hurtado wrote: > On Sun, Jan 12, 2014 at 05:29:02PM +0100, John Rogers wrote: >> Hi. >> >> I have installed OpenBSD 5.4 on a laptop. So far everything runs fine >> but I have the problem that it runs fairly hot ev

Make CPU use the C2 state

2014-01-12 Thread John Rogers
Hi. I have installed OpenBSD 5.4 on a laptop. So far everything runs fine but I have the problem that it runs fairly hot even in idle. I used to run FreeBSD on it before and it behaved very similar then, until I read [1]. Setting performance_cx_lowest="C2" and economy_cx_lowest="C2" did wonder to