Re: Savepoint and Releasepoint in Logs

From: Jeff Janes <jeff(dot)janes(at)gmail(dot)com>
To: e(dot)ratnakar(dot)shetty(at)accenture(dot)com
Cc: "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org>, daniel(dot)machet(at)accenture(dot)com
Subject: Re: Savepoint and Releasepoint in Logs
Date: 2016-06-19 16:55:16
Message-ID: CAMkU=1yskCDX8_t8SYu6TT_mE8cob3XWawzSQRxwiPYy2=105A@mail.gmail.com
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On Fri, Jun 17, 2016 at 8:19 AM, <e(dot)ratnakar(dot)shetty(at)accenture(dot)com> wrote:
> Hi ,
>
> I am connecting to PostgreSQL 9.4 via an ODBC driver on Windows machine from
> MS VBA application. I am facing huge performance issues while inserting data
> continuously. On analysing the logs , there were around 90000 statements
> related to Save Points and Release Points.
>
>
>
> duration: 2.000 ms
>
> 2016-06-17 12:45:02 BST LOG: statement: RELEASE _EXEC_SVP_1018CCF8
>
> 2016-06-17 12:45:02 BST LOG: duration: 1.000 ms
>
> 2016-06-17 12:45:05 BST LOG: statement: SAVEPOINT _EXEC_SVP_186EB5C8
>
> 2016-06-17 12:45:05 BST LOG: duration: 0.000 ms
>
>
>
> I am guessing these statements are causing an overhead while inserting
> records in to the table.

The fact that there is 3 seconds between the release of one savepoint
the start of the next suggests that your client, not the server, is
the dominant bottleneck.

Cheers,

Jeff

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