Message-ID: <3C3C155A.6948096F@tm.ee>
Date: Wed, 09 Jan 2002 12:03:06 +0200
From: Hannu Krosing <hannu@tm.ee>
MIME-Version: 1.0
To: Tatsuo Ishii <t-ishii@sra.co.jp>
CC: pgsql-hackers@postgresql.org
Subject: Re: 7.1 vs. 7.2 on AIX 5L
References: <20020109103536T.t-ishii@sra.co.jp>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

Tatsuo Ishii wrote:
> 
> Hi,
> 
> I have made a new version of pgbench which allows not to update
> branches and tellers tables, which should significantly reduce the
> contentions.  (See attached patches against current. Note that the
> paches also includes changes removing CHECKPOINT command while
> running in initialization mode (pgbench -i)). With the patches you
> could specify -N option not to update branches and tellers tables.
> 
> With the new pgbench, I ran a test with current and 7.1 and saw
> not-so-small differences. Any idea to get better performance on 7.2
> and AIX 5L combo?
> 
> 7.2 with lwlock.patch rev.2
> 7.1.3
> AIX 5L 4way with 4GB RAM
> testing script is same as my previous postings (except -N for pgbench,
> of course).
> 
>   ------------------------------------------------------------------------
>                     Name: pgbench.patch
>    pgbench.patch    Type: Plain Text (Text/Plain)
>                 Encoding: 7bit
> 
>                         Name: result-Jan-09.png
>    result-Jan-09.png    Type: PNG Image (image/png)
>                     Encoding: base64

Could you add some labels to lines as Tom did ?

We can only guess which line is which.

--------------
Hannu