Re: What exactly is postgres doing during INSERT/UPDATE ?

От: Pierre Frédéric Caillaud
Тема: Re: What exactly is postgres doing during INSERT/UPDATE ?
Дата: ,
Msg-id: op.uzc35vvbcke6l8@soyouz
(см: обсуждение, исходный текст)
Ответ на: What exactly is postgres doing during INSERT/UPDATE ?  (Joseph S)
Список: pgsql-performance

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What exactly is postgres doing during INSERT/UPDATE ?  (Joseph S, )
 Re: What exactly is postgres doing during INSERT/UPDATE ?  (Pierre Frédéric Caillaud<>, )
 Re: What exactly is postgres doing during INSERT/UPDATE ?  (Greg Smith, )
  Re: What exactly is postgres doing during INSERT/UPDATE ?  (Scott Marlowe, )
   Re: What exactly is postgres doing during INSERT/UPDATE ?  (Joseph S, )
    Re: What exactly is postgres doing during INSERT/UPDATE ?  (Luke Koops, )
     Re: What exactly is postgres doing during INSERT/UPDATE ?  (Greg Stark, )
      Re: What exactly is postgres doing during INSERT/UPDATE ?  (Scott Marlowe, )
       Re: What exactly is postgres doing during INSERT/UPDATE ?  (Merlin Moncure, )
        Re: What exactly is postgres doing during INSERT/UPDATE ?  (Greg Stark, )
        Re: What exactly is postgres doing during INSERT/UPDATE ?  (Mark Mielke, )
         Re: What exactly is postgres doing during INSERT/UPDATE ?  (Merlin Moncure, )
          Re: What exactly is postgres doing during INSERT/UPDATE ?  (Greg Stark, )
           Re: What exactly is postgres doing during INSERT/UPDATE ?  (Merlin Moncure, )
            Re: What exactly is postgres doing during INSERT/UPDATE ?  (Aidan Van Dyk, )
       Re: What exactly is postgres doing during INSERT/UPDATE ?  (Joseph S, )
        Re: What exactly is postgres doing during INSERT/UPDATE ?  (Jeff Janes, )
         Re: What exactly is postgres doing during INSERT/UPDATE ?  ("Kevin Grittner", )
          Re: What exactly is postgres doing during INSERT/UPDATE ?  (Scott Marlowe, )
      Re: What exactly is postgres doing during INSERT/UPDATE ?  (David Rees, )
  Re: What exactly is postgres doing during INSERT/UPDATE ?  (Joseph S, )
 Re: What exactly is postgres doing during INSERT/UPDATE ?  (Jeff Janes, )
  Re: What exactly is postgres doing during INSERT/UPDATE ?  (Merlin Moncure, )
   Re: What exactly is postgres doing during INSERT/UPDATE ?  (Jeff Janes, )

> top shows the cpu usage of the pg process ranges from zero to never more
> than ten percent of a cpu, and that one cpu is always ninety some odd
> percent in iowait.  So what is postgres doing (with fsync off) that
> causes the cpu to spend so much time in iowait?

    Updating indexes ?


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