Messages in this thread | | | Date | Mon, 21 Nov 2005 02:54:52 +0900 | From | Akira Tsukamoto <> | Subject | Re: AMD 64 system clock speed |
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On Sun, 20 Nov 2005 10:47:08 +1100 Tony Breeds <tony@bakeyournoodle.com> mentioned: > On Sat, Nov 19, 2005 at 01:12:26PM -0800, Chris Largret wrote: > > On Fri, 2005-11-18 at 20:01 -0500, jstipins@umich.edu wrote: > > > Hi there, > > > > > > My earlier question regarding the glibc "make check" nptl/tst-clock2.c > > > failure turns out to be due to my system clock running 3x normal speed. > > > > > > Evidently, this is a known issue with 2.6.x kernels running on AMD 64 > > > processors. The "noapic" boot option fixes the clock problem, but disrupts > > > other things... ethernet does work, etc. The solution seems to be using > > > "apci=noirq noapic" as boot options. > > > > > > I am using the 2.6.14.2 kernel, and still need to use those boot parameters. > > > What is the current state of this bug? > > > > Interestingly, I found out last night that the 2.4.26 kernel can > > recognize both processors in my X2. Unfortunately, it had the same time > > synchronization issues as the newer 2.6.12+ kernels that I have been > > running. It isn't solely related to the new kernel series. > > You could also be seeing the same problem outlined in. > http://marc.theaimsgroup.com/?t=113097284500003&r=2&w=2 > > Try booting with: acpi_skip_timer_override instead of the other command > line parameters.
My machine's clock runs about 2X from normal speed. Could you try my patch which I just posted a hour ago? http://marc.theaimsgroup.com/?l=linux-kernel&m=113249769027262&w=2
The patch will detect whether IO-APCI timer interupt is generated too fast and try to use a legacy i8259A IRQ instead.
It might help. It also worked on 2.4.31 kernel for me.
> > Yours Tony > > linux.conf.au http://linux.conf.au/ || http://lca2006.linux.org.au/ > Jan 23-28 2006 The Australian Linux Technical Conference! > > - > 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/ >
-- Akira Tsukamoto <akira-t@suna-asobi.com, at541@columbia.edu>
- 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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