On Wed, Dec 24, 2008 at 1:50 PM, Fujii Masao <masao.fujii@gmail.com> wrote:
>
>
> And, I'm worried about the situation that the speed to generate xlog
> on the primary is higher than that to copy them to the standby. We
> might not be able to start xlog streaming forever.
>
If that's the case, how do you expect the standby to keep pace with
the primary after initial sync up ? Frankly, I myself have every doubt
that on a relatively high load setup, the standby will not be able
keep pace with the primary for two reasons:
- Lack of read ahead of data blocks (Suzuki-san's work may help this)
- Single threaded recovery
But then these are general problems which may impact any log-based replication.
Thanks,
Pavan
--
Pavan Deolasee
EnterpriseDB http://www.enterprisedb.com