Re: high overhead of functions blkg_*stats_* in bfq

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Hello,

On Sun, Nov 05, 2017 at 07:21:01PM -0700, Jens Axboe wrote:
> It's pointless to give up on this so soon, when no effort has apparently
> been dedicated to figuring out what the actual issue is yet. So no, no
> patch that will just disable the stats is going to be accepted.
> 
> That said, I have no idea who uses these stats. Surely someone can
> answer that question. Tejun?

Except for the basic bytes / ios counts, it's all debug fluff, which
should have been hidden behind a debug boot param or go under debugfs.
I'm not sure we can get rid of them at this point for cfq but I don't
see why we'd have them for bfq.

Thanks.

-- 
tejun



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