Atom N450 + C3 + HPET == bad timer behaviour
Adrian Chadd <[email protected]>
| Newsgroups | gmane.os.freebsd.current,gmane.os.freebsd.devel.mobile |
|---|---|
| Message-ID | <CAJ-VmonRcBBX-=wr0wpAVJQJCztYSDxj1fUoCXhL99OkAWrqXg@mail.gmail.com> |
Hi, I'm having issues with HPET + C3 state on this Atom N450 based netbook. This is (shocking, I know!) running -HEAD (r251605.) If I use C2, HPET is fine. If I use RTC, i8254, LAPIC, C3 is also fine. But C3 + HPET results in multi-second pauses where it should be 1 second. I've disabled powerd and verified that dev.cpu.0.freq=1667; so it's not CPU frequency related. Doug found this: apparently SMI + timer fondling doesn't quite work out? http://lkml.indiana.edu/hypermail/linux/kernel/1102.3/00842.html Thanks! adrian _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "[email protected]"