I am able to reproduce this behavior on an instance running kernel version 2.3.32-311 using ami-f8f40591. As with the older kernel, new instances don't immediately exhibit symptoms.
-- 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 [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
