On Tue, 2011-08-02 at 11:55 -0600, Scott Marlowe wrote:
> > Is this likely that the disks are too slow on the replication
> > servers, or is something else happening, such as the restoration of
> logs is considerably slower than on the primary?
>
> Could be. Are the drives on the slaves much slower? I'd imagine a
> slave with the same drive setup would be able to keep up.
We have a customer who generates 150+ xlogs per minute under daily load,
and our first HS installation failed just because of :
* Network was slow (10 Mbit), so could not keep up with WAL files.
* Disks were also slow on slave.
So yeah, that could be it.
Regards,
--
Devrim GÜNDÜZ
Principal Systems Engineer @ EnterpriseDB: http://www.enterprisedb.com
PostgreSQL Danışmanı/Consultant, Red Hat Certified Engineer
Community: devrim~PostgreSQL.org, devrim.gunduz~linux.org.tr
http://www.gunduz.org Twitter: http://twitter.com/devrimgunduz
