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He even filed a bug report: http://bugme.osdl.org/show_bug.cgi?id=2552 I don't have access to my box atm, but I will certainly be trying a vanilla kernel built with SMP to see what's going on. Regards, Arjen On Fri, 23 Apr 2004, Prakash K. Cheemplavam wrote: > Len Brown wrote: > > On Thu, 2004-04-22 at 13:21, Len Brown wrote: > > > > > >>>As for your patch, I get a fast timer, and gain about 1 sec per 5 minutes. > >>>The only patch that seemed to work without a fast timer so far was the one > >>>removed by Linus in a testing version. The AN35N has the timer override > >>>bug. > >> > >>Hmm, I didn't notice fast time on my FN41, i'll look for it. > >> > >>I'm not familiar with the "one removed by Linux in a testing version", > >>perhaps you could point me to that? > > > > > > date seems to gain 9sec/hour on my Shuttle/SN41G2/FN41 when using IOAPIC > > timer. > > Do you get lock-ups wihtout the timer_ack/C1halt patch? If yes, this may > be the cause. I remember someone finding out that Ross' patch made the > timer actually slower which resulted in stable operation. Maciej found > out, not connecting the timer at all made it stabke as well. So is there > a possibility to sync both timers? > > According to a recent post, builöding kernel with SMP makes it stable, > as well, but I haven't tested. > > > booted with "noapic" for XT-PIC timer, it stays locked > > onto my wristwatch after an hour. If the workaround is disabled, > > and XT-PIC timer is used, it matches the "noapic" behaviour -- no drift. > > > > I can't explain it. I think it is a timer problem independent of the > > IRQ routing. > > > > -Len > > > > ps. when i ran in XT-PIC mode there were lots of ERR's registered in > > /proc/interrupts -- doesn't look healthy. > > > > > > > > > > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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