Re: Fighting for the power.
"Paul B. Mahol" <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.mobile,gmane.os.freebsd.devel.acpi,gmane.os.freebsd.current |
|---|---|
| Message-ID | <[email protected]> |
On 5/11/09, Alexander Motin <[email protected]> wrote: > Tim Kientzle wrote: >> I started to try the "hint.apic.0.clock", but noticed >> in your commit r191720: >> Alexander Motin wrote: >>> Add hint.apic.0.clock tunable. Setting it 0 disables using >>> LAPIC timers as hard-/stat-/profclock sources falling back >>> to using i8254 and rtc timers. >>> ... >>> This technique is not working for SMP yet, as only one CPU >>> receives timer interrupts. But I think that problem could >>> be fixed by forwarding interrupts to other CPUs with IPI. >> >> Is anyone looking at this yet? > > I have implemented SMP support for i386 and amd64 in some of my later > commits. And all those hacks helps verry little in my case, most gain I get when laptop monitor is switched off. Even switching hard disk off improves battery life very little. interrupt total rate irq1: atkbd0 5206 3 irq0: clk 156008 99 irq9: acpi0 1152 0 irq12: psm0 16092 10 irq14: ata0 6587 4 irq15: ata1 1 0 irq17: ndis0 28646 18 irq256: hdac0 18 0 Total 213710 136 -- Paul _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-mobile To unsubscribe, send any mail to "[email protected]"