On Fri, Oct 13, 2006 at 11:49:04AM -0700, Chuck Swiger wrote: > On Oct 13, 2006, at 11:26 AM, Eric Hodel wrote: > >>>Or did that change recently? > >> > >>It's only on certain systems, apparently. > > > >Is there a list of systems where it is safe to use the TSC with > >SMP? Or some script we can run? > > The problem of the TSC clocks getting out of sync affects pretty much > all AMD X2 dual-core CPUs, as well as the older 32-bit Althon MP > CPUs; the Intel Xeon and Core Duo CPUs seem to do a lot better, > although older Intel CPUs have also been reported to show problems > with the TSC. > > Disabling the fancy power-management capabilities (SpeedStep, > PowerNow, Cool-n-quiet) to prevent the system from adjusting the CPU > clock frequencies seems to reduce the extent of the problem. > However, if you want your system clock to work reliably, using the > ACPI-safe or i8254 timecounters is going to do much better than using > the faster-but-unreliable TSC method.
Beyond that, just see if it works ;-) Kris
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