Please strace the e4defrag process to see if it is spinning in userspace or in the kernel. If it is spinning in the kernel, then it's a kernel bug, not an e2fsrpogs problem. And since you're using a non-Ubuntu kernel, you'll need to take this to the upstream linux-ext4 mailing list.
If it turns out to be a case of spinning in the kernel, what we'll want to know is whether you can easily reproduce the problem, and if so, whether you can give us a kernel stack trace by using magic-sysrq-l and magic-sysrq-t. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1398434 Title: e4defrag has fatal CPU performance bottleneck To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/1398434/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
