On Sat, 2007-03-17 at 10:56 +0100, Thomas Gleixner wrote: > calibrating APIC timer ... > ... lapic delta = 2426884 > ... PM timer delta = 833908 > APIC calibration PIT not consistent with PM Timer: 232ms instead of 100ms > APIC delta adjusted to PM-Timer: 1041737 (2426884) > ..... delta 1041737 > ..... mult: 44749065 > ..... calibration result: 166677 > ..... CPU clock speed is 4659.0624 MHz. > ..... host bus clock speed is 166.0677 MHz. > > This box is off by factor 2.3 and using the PM-Timer instead of the > PIT/jiffies values gives me a correct result. > > Another one: > APIC calibration not consistent with PM Timer: 2020ms instead of 100ms > APIC delta adjusted to PM-Timer: 1254436 (25341111) > > Off by factor 20 !!
This weird behaviour also can be seen with the BogoMIPS calibration: Calibrating delay using timer specific routine.. 6428.32 BogoMIPS (lpj=12856647) .... Initializing CPU#1 Calibrating delay using timer specific routine.. 103837.25 BogoMIPS (lpj=207674508) Note, that I never observed that on CPU#0. It always affects CPU#1. tglx - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/