Re: tickless/dynticks + cpufreq = tsc unstable

2008-01-25 Thread Lee Revell
On Jan 25, 2008 6:02 PM, Michael Tokarev <[EMAIL PROTECTED]> wrote: > Is it normal that once I enable cpufreq on > a tickless system, it spews a warning: > > Clocksource tsc unstable (delta = -288201154 ns) > > ? Yes, it's normal. Dual core AMD64 machines really do have unstable TSC. Lee -- To u

tickless/dynticks + cpufreq = tsc unstable

2008-01-25 Thread Michael Tokarev
Is it normal that once I enable cpufreq on a tickless system, it spews a warning: Clocksource tsc unstable (delta = -288201154 ns) ? It's an old problem, and I was thinking about differences between x86-64 (it worked there) and i386 kernels. But with 2.6.24, x86-64 can run tickless as well, and