On Fri, 2007-06-22 at 16:57 -0400, Greg Smith wrote: > If you're not, I think you should be. Keeping that replay interval > time down was one of the reasons why the people I was working with > were displeased with the implications of the very spread out style of > some LDC tunings. They were already unhappy with the implied recovery > time of how high they had to set checkpoint_settings for good > performance, and making it that much bigger aggrevates the issue. > Given a knob where the LDC can be spread out a bit but not across the > entire interval, that makes it easier to control how much expansion > there is relative to the current behavior.
We won't need to set checkpoint_settings so high, since performance is smoothed across checkpoints by LDC and its OK to allow them more frequently. So this concern need not apply with LDC. -- Simon Riggs EnterpriseDB http://www.enterprisedb.com ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
