| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | Dimitri Fontaine <dimitri(at)2ndQuadrant(dot)fr> |
| Cc: | Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Sync Rep v19 |
| Date: | 2011-03-03 18:14:06 |
| Message-ID: | 1299176046.10703.392.camel@ebony |
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| Lists: | pgsql-hackers |
On Thu, 2011-03-03 at 18:51 +0100, Dimitri Fontaine wrote:
> Simon Riggs <simon(at)2ndQuadrant(dot)com> writes:
> > On Fri, 2011-03-04 at 00:02 +0900, Fujii Masao wrote:
> >> > * synchronous_standby_names = "*" matches all standby names
> >>
> >> Using '*' as the default seems to lead the performance degradation by
> >> being connected from unexpected synchronous standby.
> >
> > You can configure it however you wish. It seemed better to have an out
> > of the box setting that was useful.
>
> Well the HBA still needs some opening before anyone can claim to be a
> standby. I guess the default line would be commented out and no standby
> would be accepted as synchronous by default, assuming this GUC is sighup.
The patch sets "*" as the default, so all standbys are synchronous by
default.
Would you prefer it if it was blank, meaning no standbys are
synchronous, by default?
--
Simon Riggs http://www.2ndQuadrant.com/books/
PostgreSQL Development, 24x7 Support, Training and Services
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