MOLNAR Ingo wrote: > On Fri, 22 Jan 1999, Mark-Andre Hopf wrote: > > > My first assumption, my large difference in the TSC registers was wrong, > > so I guess this bug should be visible on other Intel SMP systems too, > > maybe even UP systems. [...] > > (btw. i have noticed timestamp-counter anomalies on overclocked CPUs. > Everything was OK, but the timestamp-counter got corrupted sometimes) > > if it's asynchron cycle-counters on SMP, then could you try the attached > patch? I didnt want to deal with this because most systems have a synchron > cycle counter, but it seems to be more widespread than suspected ... > > with the patch installed my box synchronizes all 4 CPUs on bootup: > > [... bootlog ...] > checking TSC synchronization across CPUs: passed. > [...] > > what does it output on your system? It says: checking TSC synchronization across CPUs: BIOS BUG: CPU#1 inproperly initialized, has 26 usecs TSC scew! FIXED. BIOS BUG: CPU#1 inproperly initialized, has 26 usecs TSC scew! FIXED. and it's a wonderful patch! `gettimeofday' is working correct with it. I can't see no reason why it prints the second line two times, the CPU number should've been different, right?, but it's okay here. I bet my machine is not overclocked, IBM sells it like this. It's an IBM PC Server 325. Hmm, is this a reason for a specific guy, we all love so much, to "wear a brown paper bag over his head for a month"? :) Thanks a lot, Mark +-----------------------------------------------------+----------------------+ | the wizard himself, Mark-Andr� Hopf | Every sufficiently | | [EMAIL PROTECTED] | developed technology | | Visit the TOAD GUI Toolkit Project Homepage at | is indistinguishable | | http://toad.home.pages.de/ | from magic. (A.C.C.) | +-----------------------------------------------------+----------------------+ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
