Re: testing HS/SR - 1 vs 2 performance

On Fri, 2010-04-23 at 11:32 -0400, Robert Haas wrote:
> >
> > 99% of transactions happen in similar times between primary and standby,
> > everything dragged down by rare but severe spikes.
> >
> > We're looking for something that would delay something that normally
> > takes <0.1ms into something that takes >100ms, yet does eventually
> > return. That looks like a severe resource contention issue.
> 
> Wow.  Good detective work.

While we haven't fully established the source of those problems, I am
now happy that these test results don't present any reason to avoid
commiting the main patch tested by Erik (not the smaller additional one
I sent). I expect to commit that on Sunday.

-- Simon Riggs           www.2ndQuadrant.com