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On Friday 07 October 2005 14:26, Vladimir B. Savkin wrote: > On Mon, Sep 19, 2005 at 12:16:43PM -0700, john stultz wrote: > > Andrew, > > This patch should resolve the issue seen in bugme bug #5105, where it > > is assumed that dualcore x86_64 systems have synced TSCs. This is not > > the case, and alternate timesources should be used instead. > > > > For more details, see: > > http://bugzilla.kernel.org/show_bug.cgi?id=5105 > > I too have a box that shows the symptoms from bugzilla entry above. > The system is Asus A8V Deluxe MB with > "AMD Athlon(tm) 64 X2 Dual Core Processor 3800+". > > The patch below did not fix the problem, while "idle=poll" did. > Hope this helps, dmesg attached. Are you running the latest BIOS? -Andi > > > Please consider for inclusion in your tree. > > > > thanks > > -john > > > > diff --git a/arch/x86_64/kernel/time.c b/arch/x86_64/kernel/time.c > > --- a/arch/x86_64/kernel/time.c > > +++ b/arch/x86_64/kernel/time.c > > @@ -959,9 +959,6 @@ static __init int unsynchronized_tsc(voi > > are handled in the OEM check above. */ > > if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) > > return 0; > > - /* All in a single socket - should be synchronized */ > > - if (cpus_weight(cpu_core_map[0]) == num_online_cpus()) > > - return 0; > > #endif > > /* Assume multi socket systems are not synchronized */ > > return num_online_cpus() > 1; > > ~ > > :wq > > With best regards, > Vladimir Savkin. - 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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