> > > > > > We have a dual-core AMD64 with the new kernel 2.6.14 and the > > > > > > timer goes backward... > > > > > > > > > > > > > > > > > > CONFIGURATION: > > > > > > > > > > > > Kernel: 2.6.14 > > > > > > Distribution: Gentoo Linux 2005.0 > > > > > > Processor: Athlon 64 x2 4200+ (dual core) > > > > > > Motherboard: Abit KN8 > > > > > > Memory: 1GB PC3200 > > > > > > > > > > > > > > > > > > PROBLEM: > > > > > > > > > > > > gettimeofday goes backward and returns values that are not > > > > > > monotonic, giving values that are smaller than values returned > > > > > > before. > > > > > > > > > > > > The system has been tested with timer as PIT, PIT/TSC and PM and > > > > > > the problem occurs with all the configurations. > > > > > > > > > > > > Here is the config file that we used for the PM configuration. > > > > > > > > > > > > Any suggestion ? > > > > > > > > > > Booting w/ idle=poll tends to work around this issue. You might > > > > > check with your motherboard vendor for an updated BIOS that > > > > > supports HPET or the ACPI PM timer. > > > > > > > > We already updated the BIOS with the latest version. > > > > > > > > Also the booting command idle=poll doesn't work. > > > > > > Hmm. Not sure then. Is this a new regression on the same hardware? > > > > Yes, we tried with idle=poll and the problem occurred again. > > Sorry for the confusion, I meant if the problem is new to 2.6.14, or if > it also happened with 2.6.13? Sorry, I didn't understand. It happened also with the old versions of the kernel. The only temporary solution that we've found is to disable one processor :( > > > > Would you mind filing a bug (http://bugzilla.kernel.org )on this and > > > attaching your config and dmesg there? > > > > Sure. > > Please assign it to me or add me to the cc list. Done. Thanks, Claudio -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
