Re: why autocommit mode is slow?

From: Simon Riggs <simon(at)2ndQuadrant(dot)com>
To: Szymon Guz <mabewlun(at)gmail(dot)com>
Cc: pgsql-general <pgsql-general(at)postgresql(dot)org>
Subject: Re: why autocommit mode is slow?
Date: 2011-04-08 14:26:57
Message-ID: BANLkTim7AO1ZAqevQambXXLF6_9MgYj6Vw@mail.gmail.com
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On Thu, Apr 7, 2011 at 9:59 PM, Szymon Guz <mabewlun(at)gmail(dot)com> wrote:

> this is maybe a stupid question, but I don't know how to explain to my
> coworkers why performing many inserts in autocommit mode is so much slower
> than making all of them in one transaction.
> Why is that so slow?

There's a performance bug that slows things down more than necessary.

I've worked out a solution that we can use to improve that.

Not sure that we should backpatch it though.

--
 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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