deadline seems less useful now that a bunch of edge cases were fixed in cfq (the graphs used to look way worse than this): <a href="http:&#x2F;&#x2F;blog.pgaddict.com&#x2F;posts&#x2F;postgresql-io-schedulers-cfq-noop-deadline" rel="nofollow">http:&#x2F;&#x2F;blog.pgaddict.com&#x2F;posts&#x2F;postgresql-io-schedulers-cfq-...</a>