Re: Synchronous replication patch built on SR

On 18/05/10 07:41, Fujii Masao wrote:
> On Sat, May 15, 2010 at 4:59 PM, Heikki Linnakangas
> <heikki.linnakangas@enterprisedb.com>  wrote:
>> BTW, What I'd like to see as a very first patch first is to change the
>> current poll loops in walreceiver and walsender to, well, not poll.
>> That's a requirement for synchronous replication, is very useful on its
>> own, and requires a some design and implementation effort to get right.
>> It would be nice to get that out of the way before/during we discuss the
>> more user-visible behavior.
>
> Yeah, we should wake up the walesender from sleep to send WAL data
> as soon as it's flushed. But why do we need to change the loop of
> walreceiver? Or you mean changing the poll loop in the startup process?

Yeah, changing the poll loop in the startup process is what I meant.

--   Heikki Linnakangas  EnterpriseDB   http://www.enterprisedb.com