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From: Anthony Sotolongo <[email protected]>
To: Keith <[email protected]>
To: Sumeet Shukla <[email protected]>
Cc: pgsql-admin <[email protected]>
Cc: [email protected]
Subject: Re: [PERFORM] 2 server with same configuration but huge difference in performance
Date: Tue, 1 Aug 2017 10:21:02 -0400
Message-ID: <[email protected]> (raw)
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Hi Sumeet Shukla

While script is running check the pg_stat_activity, this view can be util


Regards

Anthony


On 01/08/17 10:16, Keith wrote:
>
> On Tue, Aug 1, 2017 at 9:41 AM, Sumeet Shukla 
> <[email protected] <mailto:[email protected]>> 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

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