From: Arjen van der Meijden <acmmailing@tweakers.net>
To: Markus Schaber <schabi@logix-tt.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: PostgreSQL scalability on Sun UltraSparc T1
Date: Mon, 07 Aug 2006 15:45:08 +0200
Message-ID: <44D743E4.6050109@tweakers.net> (raw)
In-Reply-To: <44D73DA3.7080701@logix-tt.com>
References: <44CB7896.8030501@oli.tudelft.nl>
<44CB8235.9070903@commandprompt.com>
<44CB8DC1.4040105@tweakers.net>
<44CB9472.9060206@commandprompt.com>
<44CB9D52.8040409@tweakers.net>
<44D73DA3.7080701@logix-tt.com>
Hi Markus,
As said, our environment really was a read-mostly one. So we didn't do
much inserts/updates and thus spent no time tuning those values and left
them as default settings.
Best regards,
Arjen
Markus Schaber wrote:
> Hi, Arjen,
>
> Arjen van der Meijden wrote:
>
>> It was the 8core version with 16GB memory... but actually that's just
>> overkill, the active portions of the database easily fits in 8GB and a
>> test on another machine with just 2GB didn't even show that much
>> improvements when going to 7GB (6x1G, 2x 512M), it was mostly in the
>> range of 10% improvement or less.
>
> I'd be interested in the commit_siblings and commit_delay settings,
> tuning them could give a high increase on throughput for highly
> concurrent insert/update workloads, at the cost of latency (and thus
> worse results for low concurrency situations).
>
> Different fsync method settings can also make a difference (I presume
> that syncing was enabled).
>
> HTH,
> Markus
>
>
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: acmmailing@tweakers.net, schabi@logix-tt.com
Subject: Re: PostgreSQL scalability on Sun UltraSparc T1
In-Reply-To: <44D743E4.6050109@tweakers.net>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox