** Description changed: + SRU Justification + + Impact: When applying the Xen patchset one endif seems to have gone to + the wrong place. So instead of not setting sched_clock_stable it is done + all the time. + + Fix: Move endif so the whole code segment is covered. + + Testcase: Can cause various effects and depends on CPU (see below). + Incorrect CPU time but likely also causing the unexplainable process + gets stuck or clone/fork issues. + + --- + Ubuntu 10.04.2 LTS Ubuntu 2.6.32-312.24-ec2 2.6.32.27+drm33.12 Linux 2.6.32-312-ec2 #24-Ubuntu SMP Fri Jan 7 18:30:50 UTC 2011 x86_64 GNU/Linux We are experiencing impossibly high (thousands of days) accumulated CPU times for processes in ps and top when using the above kernel on Amazon EC2. Instances running on Intel E5430 are fine, while instances on E5507 all seem to have the problem. Please see also https://bugzilla.kernel.org/show_bug.cgi?id=16314 Thanks, Doug
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/727459 Title: TSC is not reliable under Xen on some Intel CPUs -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
