...on Fri, Nov 25, 2005 at 03:43:52PM +0800, Uwe Dippel wrote: > It's a bug, so it seems now. > Sorry, last night I didn't have access so my answer is late: > I simply rebooted to single-CPU-kernel; compiled by myself, just as well, > and it runs like hell. Exact, I mean. Not a single second off after three > hours. (so says ntpdate.)
That sounds quite a bit like what I remember reading about, something like the TSC might run at different speeds on different cores depending on thermal throttling, SpeedStep, ACPI state, whatever. So if you're switching to a counter on another core without taking that into account, you're in trouble. Which doesn't mean that's the problem here :) Alex. (no, I actually have no idea what I'm talking about)
