I forgot to mention that bfq appears to be the only IO scheduler that supports cgroups-v2 IO controllers [1]. Perhaps I am wrong, but I wasn't able to find documentation indicating that mq-deadline is cgroup-aware, at the very least it's not documented in the official deadline tunables section [2].
I'm mentioning this because btrfs' support for cgroups-v2 (and the IO isolation/fairness capability it provides) was listed as one of the key reasons to move to btrfs. While I am not clear on exactly how the IO scheduler and files system interact when it comes to IO cgroups, I thought it was worth bringing up. [1] https://www.kernel.org/doc/html/latest/block/bfq-iosched.html#group-scheduling-with-bfq [2] https://www.kernel.org/doc/html/latest/block/deadline-iosched.html _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
