I ran these commands as you explained so yes CPU is going crazy while gc is running. I'm attaching the logs file to the comment and going to revert to good state as you explained in this link https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1867007/comments/6 After that I will tell here the result Thanks!
** Attachment added: "logs" https://bugs.launchpad.net/ubuntu/+source/zsys/+bug/1870461/+attachment/5345668/+files/logs.tar.gz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1870461 Title: zsysd uses more than half of CPU and disk IO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zsys/+bug/1870461/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs