From: Heikki Linnakangas <heikki@enterprisedb.com>
To: Jignesh K. Shah <J.K.Shah@Sun.COM>
Cc: pgsql-performance@postgresql.org
Subject: Re: PostgreSQL publishes first real benchmark
Date: Wed, 11 Jul 2007 16:59:32 +0100
Message-ID: <4694FE64.8070407@enterprisedb.com> (raw)
In-Reply-To: <46925AD9.9020208@sun.com>
References: <46925AD9.9020208@sun.com>
Jignesh K. Shah wrote:
> Hello all,
>
> I think this result will be useful for performance discussions of
> postgresql against other databases.
>
> http://www.spec.org/jAppServer2004/results/res2007q3/
>
> More on Josh Berkus's blog:
>
> http://blogs.ittoolbox.com/database/soup/archives/postgresql-publishes-first-real-benchmark-17470
May I ask you why you set max_prepared_transactions to 450, while you're
apparently not using prepared transactions, according to this quote:
> Recoverable 2-phase transactions were used to coordinate the interaction between
> the database server and JMS server using Sun's Last Agent Logging
> Optimization; the 1PC database transactions and transaction log records are
> written to the database in a single transaction.
Did you perhaps use 2PC at first, but didn't bother to change the config
after switching to the last agent optimization?
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
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To: pgsql-performance@postgresql.org
Cc: heikki@enterprisedb.com, J.K.Shah@Sun.COM
Subject: Re: PostgreSQL publishes first real benchmark
In-Reply-To: <4694FE64.8070407@enterprisedb.com>
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