On Wed, 12 Dec 2018 14:41:37 -0700
stan <stanl-fedorauser(a)vfemail.net> wrote:
On Wed, 12 Dec 2018 16:07:49 -0500
Jeff Moyer <jmoyer(a)redhat.com> wrote:
Thanks for your insight. Doesn't look good for my use of BFQ.
> Note that you can change the current I/O scheduler for any block
> device by echo-ing into /sys/block/<dev>/queue/scheduler. Cat-ing
> that file will give you the list of available schedulers.
That's part of the problem. BFQ doesn't appear in the list of
available schedulers. When I cat that location for my disks, I see
[noop]. Since CFQ does appear there if it is compiled into the
kernel, I'll have to look into what is done for CFQ and see how hard
it would be to patch the kernel to repeat that behavior for BFQ.
Enabled deadline and cfq again, but still no bfq available.
$ cat /sys/block/sda/queue/scheduler
noop deadline [cfq]