On Tue, Aug 16, 2011 at 10:42 AM, Alexander Motin <[email protected]> wrote: > Joe Schaefer wrote: >>>>>>> If changing timecounter won't help, try please this patch: >>>>>>> >>>>>>> --- acpi_hpet.c.prev 2010-12-25 11:28:45.000000000 +0200 >>>>>>> +++ acpi_hpet.c 2011-05-11 14:30:59.000000000 +0300 >>>>>>> @@ -190,7 +190,7 @@ restart: >>>>>>> bus_write_4(sc->mem_res, HPET_TIMER_COMPARATOR(t->num), >>>>>>> t->next); >>>>>>> } >>>>>>> - if (fdiv < 5000) { >>>>>>> + if (1 || fdiv < 5000) { >>>>>>> bus_read_4(sc->mem_res, HPET_TIMER_COMPARATOR(t->num)); >>>>>>> now = bus_read_4(sc->mem_res, HPET_MAIN_COUNTER); >>>>>>> >>>>>>> -- >>>>>>> Alexander Motin >>>>>> Will do next. >>>>>> >>>>> Patch applied. Running with HPET eventtimer and no stalls during >>>>> make buildworld -j12. >>>>> >>> it maybe help, I used to come across a bug on Linux with regard to HPET, >>> some northbridge chipset (maybe amd's, where >>> HPET sit on) has a problem, that writes to compatitor regs will not take >>> effect immediately, you need a read to reg to flush it; >> >> So far the patch performs flawlessly for me. I'm tempted to reenable turbo >> mode just for kicks (someday, not today- delighted with the uptime!) > > I am going to commit following patch: > http://people.freebsd.org/~mav/hpet.paranoid.patch > . It uses same assumptions as Linux. Try it please.
+1 to apply: (tested with buildworld -j18) -------------------------------------------------------------- >>> World build completed on Tue Aug 16 12:02:20 EDT 2011 -------------------------------------------------------------- 5255.533u 2443.815s 30:28.62 421.0% 6535+4429k 0+0io 223826pf+0w sextant# uname -a FreeBSD sextant.sunstarsys.com 9.0-BETA1 FreeBSD 9.0-BETA1 #1 r224899M: Tue Aug 16 10:55:12 EDT 2011 [email protected]:/usr/obj/usr/src/sys/DTRACE amd64 sextant# uptime 12:02PM up 32 mins, 3 users, load averages: 6.90, 12.58, 10.64 > > -- > Alexander Motin > _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[email protected]"
