Claudio Freire <klaussfreire@xxxxxxxxx> writes: > On Wed, Mar 23, 2011 at 5:29 PM, Josh Berkus <josh@xxxxxxxxxxxx> wrote: >> On 3/23/11 10:35 AM, Claudio Freire wrote: >>> * consider plan bailout: execute a tempting plan, if it takes too >>> long or its effective cost raises well above the expected cost, bail >>> to a safer plan >> That would actually solve this particular case. It would still require >> us to have some definition of "safer" though. > In my head, safer = better worst-case performance. If the planner starts operating on the basis of worst case rather than expected-case performance, the complaints will be far more numerous than they are today. regards, tom lane -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
