On Fri, Jan 6, 2012 at 8:55 AM, Robin Price II <[email protected]> wrote: > Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=765720 > > This is private due to private information from customer use cases. If you > need further details, I would highly encourage you to contact Red Hat > support or your TAM. > > Here is the initial information opened in the BZ: > > "The following patch is in urgent fix for Linus branch, which avoid the > unnecessary overflow in sched_clock otherwise kernel will crash after > 209~250 days. > > http://git.kernel.org/?p=linux/kernel/git/tip/tip.git;a=patch;h=4cecf6d401a01d054afc1e5f605bcbfe553cb9b9 > > 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." > > ~rp
Thank you for this post to let us know that Red Hat is now taking care of this issue. Akemi _______________________________________________ rhelv6-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/rhelv6-list
