Also, potentially related, the 2.6.32 kernels seem to sometimes drop timer signals for CLOCK_PROCESS_CPUTIME_ID and continue to report unusual process CPU times in system monitoring tools like top and via the proc filesystem. I can reproduce the signal behavior with this program: https://gist.github.com/14585329e013d1bf5134 -- some runs are uneventful and proceed as expected, others hang forever without ever receiving a signal.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. https://bugs.launchpad.net/bugs/708920 Title: Strange 'fork/clone' blocking behavior under high cpu usage on EC2 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
