On Sun, Feb 19, 2012 at 11:12 PM, Greg Smith <greg@2ndquadrant.com> wrote:
> I'm collecting one last bit of data before posting another full set of
> results, but I'm getting more comfortable the issue here is simply changes
> in the BGW behavior. The performance regression tracks the background
> writer maximum intensity.
That's really quite fascinating... but it seems immensely
counterintuitive. Any idea why? BufFreelist contention between the
background writer and regular backends leading to buffer allocation
stalls, maybe?
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company