Messages in this thread | | | Date | Wed, 26 Oct 2016 08:29:55 -0700 | From | Christoph Hellwig <> | Subject | Re: [PATCH 00/14] introduce the BFQ-v0 I/O scheduler as an extra scheduler |
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On Wed, Oct 26, 2016 at 05:13:07PM +0200, Arnd Bergmann wrote: > The question to ask first is whether to actually have pluggable > schedulers on blk-mq at all, or just have one that is meant to > do the right thing in every case (and possibly can be bypassed > completely).
That would be my preference. Have a BFQ-variant for blk-mq as an option (default to off unless opted in by the driver or user), and not other scheduler for blk-mq. Don't bother with bfq for non blk-mq. It's not like there is any advantage in the legacy-request device even for slow devices, except for the option of having I/O scheduling.
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