I want to report that the CPU time bug is still present in the following kernel
2.6.32-317-ec2 on AWS instance m1.large with CPU model name : Intel(R) Xeon(R) CPU E5507 @ 2.27GHz I logged the output of ps every minute and I can now show the bug happening, as you can see the CPU time originally at 35790:43 does get corrupted and the next minute jumps at 17179869:11 to reach 29322904:44 1 minute later www-data 8269 31.3 9.2 853516 725496 ? Sl Aug23 35789:36 /usr/local/lib/erlang/erts-5.8.4/bin/beam.smp -P ... www-data 8269 31.3 9.2 866128 731640 ? Sl Aug23 35790:09 /usr/local/lib/erlang/erts-5.8.4/bin/beam.smp -P ... www-data 8269 31.3 9.3 868704 738800 ? Sl Aug23 35790:43 /usr/local/lib/erlang/erts-5.8.4/bin/beam.smp -P ... www-data 8269 31.3 9.4 872964 742660 ? Sl Aug23 35791:17 /usr/local/lib/erlang/erts-5.8.4/bin/beam.smp -P ... www-data 8269 120093018 9.4 885060 748036 ? Sl Aug23 17179869:11 /usr/local/lib/erlang/erts-5.8.4/bin/beam.smp -P ... www-data 8269 10652 9.3 868748 739144 ? Sl Aug23 29322904:44 /usr/local/lib/erlang/erts-5.8.4/bin/beam.smp -P ... It took us around 3 months running this process at around 30% load to reach this condition Because of this problem the machine currently reports a load of 0 when instead we know it should report between 20 and 40% depending by the moment of the day. Please let me know If I need to open a specific ticket for this issue. Today we're going to upgrade to 2.6.32-319-ec2 thanks, Paolo Negri -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/708920 Title: Strange 'fork/clone' blocking behavior under high cpu usage on EC2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-ec2/+bug/708920/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
