Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?

От: Pierre C
Тема: Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?
Дата: ,
Msg-id: op.vd06hsoueorkce@apollo13
(см: обсуждение, исходный текст)
Ответ на: Large (almost 50%!) performance drop after upgrading to 8.4.4?  (Max Williams)
Список: pgsql-performance

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Large (almost 50%!) performance drop after upgrading to 8.4.4?  (Max Williams, )
 Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?  ("Pierre C", )
 Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?  (Robert Haas, )
  Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?  (Max Williams, )
  Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?  (Devrim GÜNDÜZ, )
   Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?  (Max Williams, )
    Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?  (Tom Lane, )
     Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?  (Max Williams, )
      Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?  ("Kevin Grittner", )
       Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?  (Max Williams, )
        Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?  (Tom Lane, )
         Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?  (Alvaro Herrera, )
          Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?  (Lacey Powers, )
        Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?  (Greg Smith, )
      Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?  (Tom Lane, )
 Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?  (John Reeve, )

Can you give the config params for those :

fsync =
synchronous_commit =
wal_sync_method =

Also, some "vmstat 1" output during the runs would be interesting.


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От: "Pierre C"
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Сообщение: Re: Large (almost 50%!) performance drop after upgrading to 8.4.4?
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