Re: 2 server with same configuration but huge difference in performance

On Tue, Aug 1, 2017 at 9:41 AM, Sumeet Shukla <sumeet.k.shukla@gmail.com>
wrote:

> Hi,
>
> I have 2 PG servers with same h/w and configuration and they are not in
> replication.
>
> On server A it takes 20 minutes to execute the script.
> On server B it takes more than 20 hours. (Seems to be stuck with create
> index and and create foreign key steps)
>
> Any guidance to troubleshoot this would be highly appreciated.
>
> Thanks & Regards,
> Sumeet Shukla
>
>
Check for long running queries on the server that is taking longer. If it's
things like CREATE INDEX or ALTER TABLE statements that are being blocked,
a transaction running on the table involved will cause those commands to be
held until those transactions complete.

If it's normal read/write queries to that are taking longer, ensure the
database statistics are up to date by running an analyze.

Keith