Matthew T. O'Connor wrote: > Alvaro Herrera wrote: > >Csaba Nagy wrote: > > > >>Now when the queue tables get 1000 times dead space compared to their > >>normal size, I get performance problems. So tweaking vacuum cost delay > >>doesn't buy me anything, as not vacuum per se is the performance > >>problem, it's long run time for big tables is. > >> > >So for you it would certainly help a lot to be able to vacuum the first > >X pages of the big table, stop, release locks, create new transaction, > >continue with the next X pages, lather, rinse, repeat. > > I got the impression that Csaba is looking more for "multiple > simultaneous vacuum" more than the partial vacuum.
So he rather needs Hannu Krosing's patch for simultaneous vacuum ... -- Alvaro Herrera http://www.CommandPrompt.com/ The PostgreSQL Company - Command Prompt, Inc. ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
