On Wed, 12 Dec 2018 16:50:10 -0700 Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote: > OK that worked for an nvme drive, but not for an internal SATA HDD. > > $ sudo lsmod | grep bfq > $ sudo cat /sys/block/sda/queue/scheduler > noop deadline [cfq] > $ sudo > insmod /usr/lib/modules/4.19.8-300.fc29.x86_64/kernel/block/bfq.ko.xz > $ sudo cat /sys/block/sda/queue/scheduler noop deadline [cfq] > $ sudo lsmod | grep bfq > bfq 69632 0 > $ > > So yeah this seems a lot more difficult than it should be. Thanks for the confirmation. I built all the schedulers into the kernel. I made the assumption that the kernel would be aware of those built in drivers. For deadline and cfq, true, for bfq, I thought it was not true. The plot thickens. I looked in the journal and found localhost.localdomain kernel: io scheduler bfq registered localhost.localdomain kernel: io scheduler cfq registered (default) localhost.localdomain kernel: io scheduler deadline registered localhost.localdomain kernel: io scheduler noop registered So the kernel is aware of bfq. There must be something missing for bfq in order for it to be treated the same as cfq or deadline. _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
