Re: [PERFORM] Hints proposal

От: Jeff Davis
Тема: Re: [PERFORM] Hints proposal
Дата: ,
Msg-id: 1160761481.31966.242.camel@dogma.v10.wvs
(см: обсуждение, исходный текст)
Ответ на: Re: [PERFORM] Hints proposal  ("Jim C. Nasby")
Список: pgsql-hackers

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Re: [PERFORM] Hints proposal  (Tom Lane, )
 Re: [PERFORM] Hints proposal  ("Merlin Moncure", )
 Re: [PERFORM] Hints proposal  ("Jim C. Nasby", )
  Re: [PERFORM] Hints proposal  (Tom Lane, )
  Re: [PERFORM] Hints proposal  (Josh Berkus, )
   Re: [PERFORM] Hints proposal  ("Jim C. Nasby", )
    Re: [PERFORM] Hints proposal  (Josh Berkus, )
     Re: [PERFORM] Hints proposal  ("Bucky Jordan", )
      Re: [PERFORM] Hints proposal  (Alvaro Herrera, )
       Re: [PERFORM] Hints proposal  (Jeff Davis, )
        Re: [PERFORM] Hints proposal  ("Bucky Jordan", )
         Re: [PERFORM] Hints proposal  (Jeff Davis, )
          Re: [PERFORM] Hints proposal  ("Jim C. Nasby", )
           Re: [PERFORM] Hints proposal  ("Joshua D. Drake", )
            Re: [PERFORM] Hints proposal  (Andrew Dunstan, )
           Re: [PERFORM] Hints proposal  (David Fetter, )
           Re: [PERFORM] Hints proposal  (Jeff Davis, )
           Re: [PERFORM] Hints proposal  (Stefan Kaltenbrunner, )
     Re: [PERFORM] Hints proposal  ("Jim C. Nasby", )
      Re: [PERFORM] Hints proposal  (Tom Lane, )
      Re: [PERFORM] Hints proposal  ("Bucky Jordan", )
      Re: [PERFORM] Hints proposal  (Josh Berkus, )
       Re: [PERFORM] Hints proposal  ("Jim C. Nasby", )
        Re: [PERFORM] Hints proposal  (Alvaro Herrera, )
        Re: [PERFORM] Hints proposal  (Tom Lane, )
     Re: [PERFORM] Hints proposal  (Gregory Stark, )
      Re: [PERFORM] Hints proposal  (Robert Treat, )
   Re: [PERFORM] Hints proposal  ("Zeugswetter Andreas ADI SD", )
    Re: [PERFORM] Hints proposal  (Josh Berkus, )
  Re: [PERFORM] Hints proposal  (Andrew Sullivan, )
   Re: [PERFORM] Hints proposal  ("Merlin Moncure", )
    Re: [PERFORM] Hints proposal  (Andrew Sullivan, )
   Re: [PERFORM] Hints proposal  ("Zeugswetter Andreas ADI SD", )
    Re: [PERFORM] Hints proposal  (Andrew Sullivan, )
     Re: [PERFORM] Hints proposal  (Csaba Nagy, )
      Re: [PERFORM] Hints proposal  (Josh Berkus, )
     Re: [PERFORM] Hints proposal  ("Zeugswetter Andreas ADI SD", )
 Re: [PERFORM] Hints proposal  (Csaba Nagy, )
  Re: [PERFORM] Hints proposal  (Josh Berkus, )
   Re: [PERFORM] Hints proposal  (Csaba Nagy, )
  Re: [PERFORM] Hints proposal  (Tom Lane, )

On Fri, 2006-10-13 at 12:30 -0500, Jim C. Nasby wrote:
> On Fri, Oct 13, 2006 at 10:23:31AM -0700, Jeff Davis wrote:
> > Right. And I think the sane ideas are along the lines of estimate & cost
> > corrections (like Tom is saying).
> 
> Let me ask this... how long do you (and others) want to wait for those?
> It's great that the planner is continually improving, but it also
> appears that there's still a long road ahead. Having a dune-buggy to get
> to your destination ahead of the road might not be a bad idea... :)

Fair enough. I can wait indefinitely right now, because I don't have any
serious problems with the planner as-is.

I am trying to empathize with people who are desperate to force plans
sometimes. Your original proposal included hints in the client queries.
I suggested that regexes on the server can accomplish the same goal
while avoiding a serious drawback. Don't you think some kind of server
matching rule is better?

I think an idea to get the hints into the server, regardless of the
types of hints you want to use, make it more likely to be accepted.
Don't you think that's a better road to take?

Regards,Jeff Davis




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Сообщение: Re: [PERFORM] Hints proposal