Hi Robert, thanks for the update and really good to hear. The bug you mentioned might be one of the possible reasons. There also have been changes to change timer and ipi interrupts to be per-cpu and the rest to use fasteoi instead of level (moving around masking code as well). Having irqs use the level based handler was claimed to potentially cause missing interrupts which may or may not have some impact in this case. The other changes to process time accounting probably only have impact on runtime output which was showing impossible values (larger than uptime) but who knows. So yeah, one of the above likely. :)
-- 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
