From: Robert Haas <robertmhaas@gmail.com>
To: Ivan Voras <ivoras@freebsd.org>
Cc: pgsql-performance@postgresql.org
Subject: Re: Re: Postgres insert performance and storage requirement compared to Oracle
Date: Wed, 27 Oct 2010 22:01:07 -0400
Message-ID: <AANLkTimB0FG2fPQPLL4SVgLWHTh8pYn3pJODTPDeaEM1@mail.gmail.com> (raw)
In-Reply-To: <ia8tvj$15r$1@dough.gmane.org>
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On Wed, Oct 27, 2010 at 6:13 AM, Ivan Voras <ivoras@freebsd.org> wrote:
> On 10/26/10 17:41, Merlin Moncure wrote:
>> On Tue, Oct 26, 2010 at 11:08 AM, Leonardo Francalanci <m_lists@yahoo.it> wrote:
>>>> temp tables are not wal logged or
>>>> synced. Periodically they can be flushed to a permanent table.
>>>
>>>
>>> What do you mean with "Periodically they can be flushed to
>>> a permanent table"? Just doing
>>>
>>> insert into tabb select * from temptable
>>>
>>
>> yup, that's exactly what I mean -- this will give you more uniform
>
> In effect, when so much data is in temporary storage, a better option
> would be to simply configure "synchronous_commit = off" (better in the
> sense that the application would not need to be changed). The effects
> are almost the same - in both cases transactions might be lost but the
> database will survive.
Gee, I wonder if it would possible for PG to automatically do an
asynchronous commit of any transaction which touches only temp tables.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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To: pgsql-performance@postgresql.org
Cc: robertmhaas@gmail.com, ivoras@freebsd.org
Subject: Re: Re: Postgres insert performance and storage requirement compared to Oracle
In-Reply-To: <AANLkTimB0FG2fPQPLL4SVgLWHTh8pYn3pJODTPDeaEM1@mail.gmail.com>
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