Re: Initial 9.2 pgbench write results

On Mon, Feb 27, 2012 at 3:50 AM, Simon Riggs <simon@2ndquadrant.com> wrote:
> That isn't the case. We have evidence that the current knobs are
> hugely ineffective in some cases.
>
> Turning the bgwriter off is hardly "adjusting a setting", its
> admitting that there is no useful setting.
>
> I've suggested changes that aren't possible by tuning the current knobs.

OK, fair point.  But I don't think any of us - Greg included - have an
enormously clear idea why turning the background writer off is
improving performance in some cases.  I think we need to understand
that better before we start changing things.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company