Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance

From: Bruce Momjian
Subject: Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance
Date: ,
Msg-id: 200908080413.n784Dn913949@momjian.us
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In response to: Re: BUG #4919: CREATE USER command slows down system performance  (Tom Lane)
Responses: Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance  (Tom Lane)
List: pgsql-bugs

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BUG #4919: CREATE USER command slows down system performance  ("Lauris Ulmanis", )
 Re: BUG #4919: CREATE USER command slows down system performance  (Heikki Linnakangas, )
  Re: BUG #4919: CREATE USER command slows down system performance  ("Lauris Ulmanis", )
   Re: BUG #4919: CREATE USER command slows down system performance  (Alvaro Herrera, )
    Re: BUG #4919: CREATE USER command slows down system performance  (toruvinn, )
     Re: BUG #4919: CREATE USER command slows down system performance  (Alvaro Herrera, )
      Re: BUG #4919: CREATE USER command slows down system performance  (Tom Lane, )
       Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance  (Marko Kreen, )
        Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance  (David Wilson, )
         Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance  (Tom Lane, )
         Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance  (Marko Kreen, )
       Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance  (Bruce Momjian, )
        Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance  (Tom Lane, )
         Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance  (Alvaro Herrera, )
          Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance  (Tom Lane, )
           Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance  (Tom Lane, )
            Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance  (Alvaro Herrera, )
             Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance  (Tom Lane, )
              Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance  (Alvaro Herrera, )
               Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance  (Tom Lane, )
         Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance  (Bruce Momjian, )
    Re: BUG #4919: CREATE USER command slows down systemperformance  ("Lauris Ulmanis", )
 Re: BUG #4919: CREATE USER command slows down system performance  (Alvaro Herrera, )

Tom Lane wrote:
> Alvaro Herrera <> writes:
> > toruvinn wrote:
> >> I was always wondering, though, why PostgreSQL uses this approach and not
> >> its catalogs.
>
> > It does use the catalog for most things.  THe flatfile is used for the
> > situations where the catalogs are not yet ready to be read.
>
> Now that we have SQL-level CONNECT privilege, I wonder just how much
> functionality would be lost if we got rid of the flat files and told
> people they had to use CONNECT to do any per-user or per-database
> access control.
>
> The main point I can see offhand is that password checking would have
> to be done a lot later in the startup sequence, with correspondingly
> more cycles wasted to reject bad passwords.

Is this a TODO?

--
  Bruce Momjian  <>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + If your life is a hard drive, Christ can be your backup. +


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From: Bruce Momjian
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Subject: Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance
From: Tom Lane
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Subject: Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance