The problem seems to be indeed that the et131x driver doesn't work well with a tickless kernel. I boot with "nohz=off" now and ksoftirqd's CPU consumption is back to normal. To turn off the the messages to the kernel log about the unhandled IOCTL I load the module with the option "et131x_debug_flags=0".
-- et131x causing ksoftirqd to eat up cpu https://bugs.launchpad.net/bugs/150515 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
