This problem has been fixed at mainline/longterm-2.6.32.50 ? https://www.kernel.org/pub/linux/kernel/v2.6/longterm/ChangeLog-2.6.32.50 | commit e52d3fb7c83d6cb569f343a3db9b45decc801f59 | Author: Salman Qazi <sq...@google.com> | Date: Tue Nov 15 14:12:06 2011 -0800 | | sched, x86: Avoid unnecessary overflow in sched_clock | | commit 4cecf6d401a01d054afc1e5f605bcbfe553cb9b9 upstream. | | In hundreds of days, the __cycles_2_ns calculation in sched_clock | has an overflow. cyc * per_cpu(cyc2ns, cpu) exceeds 64 bits, causing | the final value to become zero. We can solve this without losing | any precision. | | We can decompose TSC into quotient and remainder of division by the | scale factor, and then use this to convert TSC into nanoseconds.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/805341 Title: sched clock overflows in 208 days (i386 and amd64) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/805341/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
