Re: Autovaccum with cost_delay does not complete on one solaris 5.10 machine

От: Tom Lane
Тема: Re: Autovaccum with cost_delay does not complete on one solaris 5.10 machine
Дата: ,
Msg-id: 16088.1271362441@sss.pgh.pa.us
(см: обсуждение, исходный текст)
Ответ на: Re: Autovaccum with cost_delay does not complete on one solaris 5.10 machine  (Alvaro Herrera)
Ответы: Re: Autovaccum with cost_delay does not complete on one solaris 5.10 machine  (Alvaro Herrera)
Список: pgsql-performance

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Autovaccum with cost_delay does not complete on one solaris 5.10 machine  (Josh Berkus, )
 Re: Autovaccum with cost_delay does not complete on one solaris 5.10 machine  (Alvaro Herrera, )
  Re: Autovaccum with cost_delay does not complete on one solaris 5.10 machine  (Tom Lane, )
   Re: Autovaccum with cost_delay does not complete on one solaris 5.10 machine  (Alvaro Herrera, )
    Re: Autovaccum with cost_delay does not complete on one solaris 5.10 machine  (Josh Berkus, )
     Re: Autovaccum with cost_delay does not complete on one solaris 5.10 machine  (Tom Lane, )
      Re: Autovaccum with cost_delay does not complete on one solaris 5.10 machine  (Josh Berkus, )
       Re: Autovaccum with cost_delay does not complete on one solaris 5.10 machine  (Josh Berkus, )
        Re: Autovaccum with cost_delay does not complete on one solaris 5.10 machine  (Alvaro Herrera, )
         Re: Autovaccum with cost_delay does not complete on one solaris 5.10 machine  (Josh Berkus, )

Alvaro Herrera <> writes:
> We don't call pollsys anywhere.  Something in Solaris must be doing it
> under the hood.

pg_usleep calls select(), and some googling indicates that select() is
implemented as pollsys() on recent Solaris versions.  So Josh's
assumption that those are delay calls seems plausible.  But it shouldn't
be sleeping after each page with normal cost_delay parameters, should it?

            regards, tom lane


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