Re: Autovacuum / full vacuum

От: Michael Riess
Тема: Re: Autovacuum / full vacuum
Дата: ,
Msg-id: dqj07o$2tl4$1@news.hub.org
(см: обсуждение, исходный текст)
Ответ на: Re: Autovacuum / full vacuum  (Christopher Browne)
Ответы: Re: Autovacuum / full vacuum  (Michael Stone)
Re: Autovacuum / full vacuum  (Andrew Sullivan)
Re: Autovacuum / full vacuum  (hubert depesz lubaczewski)
Re: Autovacuum / full vacuum  ("Jim C. Nasby")
Список: pgsql-performance

Скрыть дерево обсуждения

Autovacuum / full vacuum  (Michael Riess, )
 Re: Autovacuum / full vacuum  (Christopher Kings-Lynne, )
  Re: Autovacuum / full vacuum  (Michael Riess, )
   Re: Autovacuum / full vacuum  (Michael Stone, )
   Re: Autovacuum / full vacuum  ("Matthew T. O'Connor", )
    Re: Autovacuum / full vacuum  (Markus Schaber, )
    Re: Autovacuum / full vacuum  (Michael Riess, )
     Re: Autovacuum / full vacuum  (Tom Lane, )
     Re: Autovacuum / full vacuum  (Markus Schaber, )
    Re: Autovacuum / full vacuum  (Andrew Sullivan, )
  Re: Autovacuum / full vacuum  (Pandurangan R S, )
 Re: Autovacuum / full vacuum  (Alvaro Herrera <-ip.org>, )
 Re: Autovacuum / full vacuum  (Christopher Browne, )
  Re: Autovacuum / full vacuum  (Michael Riess, )
   Re: Autovacuum / full vacuum  (Andrew Sullivan, )
 Re: Autovacuum / full vacuum  ("Larry Rosenman", )
 Re: Autovacuum / full vacuum  (Christopher Browne, )
  Re: Autovacuum / full vacuum  (Michael Riess, )
   Re: Autovacuum / full vacuum  (Michael Stone, )
   Re: Autovacuum / full vacuum  (Andrew Sullivan, )
    Re: Autovacuum / full vacuum  (Scott Marlowe, )
     Re: Autovacuum / full vacuum  (Andrew Sullivan, )
      Re: Autovacuum / full vacuum  (Scott Marlowe, )
   Re: Autovacuum / full vacuum  (hubert depesz lubaczewski, )
   Re: Autovacuum / full vacuum  ("Jim C. Nasby", )
    Re: Autovacuum / full vacuum  (Michael Riess, )
     Re: Autovacuum / full vacuum  ("Jim C. Nasby", )
 Re: Autovacuum / full vacuum  (Andrew Sullivan, )
  Re: Autovacuum / full vacuum  (Michael Riess, )
   Re: Autovacuum / full vacuum  (Andrew Sullivan, )
 Re: Autovacuum / full vacuum  (Tom Lane, )
 Re: Autovacuum / full vacuum  (Chris Browne, )
  Re: Autovacuum / full vacuum  (Alvaro Herrera <-ip.org>, )
  Re: Autovacuum / full vacuum  (Andrew Sullivan, )
 Re: Autovacuum / full vacuum  (Chris Browne, )
  Re: Autovacuum / full vacuum  (Tom Lane, )
 Re: Autovacuum / full vacuum  ("Mindaugas", )
  Re: Autovacuum / full vacuum  (Alvaro Herrera <-ip.org>, )
 Re: Autovacuum / full vacuum  (Chris Browne, )
  Re: Autovacuum / full vacuum (off-topic?)  (Michael Crozier, )
   Re: Autovacuum / full vacuum (off-topic?)  ("Jim C. Nasby", )
    Re: Autovacuum / full vacuum (off-topic?)  (Michael Crozier, )
     Re: Autovacuum / full vacuum (off-topic?)  ("Jim C. Nasby", )
    Re: Autovacuum / full vacuum (off-topic?)  (Mark Kirkwood, )
     Re: Autovacuum / full vacuum (off-topic?)  (Bruce Momjian, )
     Re: Autovacuum / full vacuum (off-topic?)  ("Jim C. Nasby", )
      Re: Autovacuum / full vacuum (off-topic?)  ("Joshua D. Drake", )
       Re: Autovacuum / full vacuum (off-topic?)  ("Jim C. Nasby", )
        Re: Autovacuum / full vacuum (off-topic?)  ("Joshua D. Drake", )
         Re: Autovacuum / full vacuum (off-topic?)  ("Jim C. Nasby", )
 Re: Autovacuum / full vacuum (off-topic?)  (Chris Browne, )
  Re: Autovacuum / full vacuum (off-topic?)  (Michael Crozier, )
 Re: Autovacuum / full vacuum (off-topic?)  (<>, )
  Re: Autovacuum / full vacuum (off-topic?)  ("Jim C. Nasby", )

Well,

I think that the documentation is not exactly easy to understand. I
always wondered why there are no examples for common postgresql
configurations. All I know is that the default configuration seems to be
too low for production use. And while running postgres I get no hints as
to which setting needs to be increased to improve performance. I have no
chance to see if my FSM settings are too low other than to run vacuum
full verbose in psql, pipe the result to a text file and grep for some
words to get a somewhat comprehensive idea of how much unused space
there is in my system.

Don't get me wrong - I really like PostgreSQL and it works well in my
application. But somehow I feel that it might run much better ...

about the FSM: You say that increasing the FSM is fairly cheap - how
should I know that?

>> did you read my post? In the first part I explained why I don't want
>> to increase the FSM that much.
>
> No, you didn't.  You explained *that* you thought you didn't want to
> increase the FSM.  You didn't explain why.
>
> FSM expansion comes fairly cheap  ...


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