I am experiencing a very similar, if not the same, issue. >From time to time, zsysd CPU and I/O usage spikes and stays high for at least 15 minutes. After that, my laptop starts overheating, and I manually restart zsysd using systemctl.
After this restart, a manual run of `zsysctl service gc -vv` cleans old snapshots as expected and takes a very short time, not even a minute. It seems that the previous run that caused the high CPU usage got stuck on some loop. I am uploading the output of both `zpool` and `zfs list -t all` for the time being. I have also added this drop-in to the zsysd unit to collect verbose logs for you when this issue reproduces on my side. # /etc/systemd/system/zsysd.service.d/override.conf [Service] ExecStart= ExecStart=/sbin/zsysd -vv Is there anything else I could do to help you with this? ** Attachment added: "ZFS logs" https://bugs.launchpad.net/ubuntu/+source/zsys/+bug/1870461/+attachment/5374220/+files/out.tar -- 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 [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
