Re: pg_upgrade bug found!

Tom Lane wrote:
> Josh Berkus <josh@agliodbs.com> writes:
> >> -- It will not lock any tables but will generate I/O.
> 
> > add:
> > IMPORTANT: Depending on the size and configuration of your database,
> > this script may generate a lot of I/O and degrade database performance.
> > Users should execute this script during a low traffic period and watch
> > the database load.
> 
> It might be worth suggesting that people can adjust their vacuum delay
> parameters to control the I/O load.

I talked to Tom about this and I am worried people will adjust it so it
takes days to complete.  Is that a valid concern?  Does anyone have a
suggested value?

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

  + It's impossible for everything to be true. +