Message-ID: <44346AC4.1070801@nube.com.br>
Date: Wed, 05 Apr 2006 22:11:32 -0300
From: Marcelo Tada <marcelo.tada@nube.com.br>
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To: "Juan Casero (FL FLC)" <Juan.Casero@wholefoods.com>
CC: josh@agliodbs.com,  pgsql-performance@postgresql.org,
	Luke Lonergan <llonergan@greenplum.com>
Subject: Re: Sun Fire T2000 and PostgreSQL 8.1.3
References: <7583B3F1891CC0429FA4A44952AA539C66FA7D@wfm-exchprd2.wfm.pvt>
In-Reply-To: <7583B3F1891CC0429FA4A44952AA539C66FA7D@wfm-exchprd2.wfm.pvt>
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Juan, I think that AMD Opteron is more flex (OS and Hardware Upgrade) 
and then, the best solution.š

What are you think about the Sun Fire X64 X4200 Server?

Take a look in this analysis and performance benchmark˛.

Regards,
MTada

š http://www.anandtech.com/systems/showdoc.aspx?i=2727&p=2
˛ http://www.anandtech.com/systems/showdoc.aspx?i=2727&p=7

Juan Casero (FL FLC) wrote:

>I am evaluating this SunFire T2000 as a replacement for an Intel P3 1Ghz
>postgresql server.  This intel server runs a retail reporting database
>on postgresql 8.1.3.  I need to realize significant performance gains on
>T2000 server to justify the expense.  So I need to tune the postgresql
>server as much as I can for it.  Right now the operating system (solaris
>10) sees each thread as a single cpu and only allows each thread 4.16%
>of the available cpu resources for processing queries.  Since postgresql
>is not multithreaded and since I cannot apparently break past the
>operating system imposed limits on a single thread I can't fully realize
>the performance benefits of the T2000 server unless and until I start
>getting lots of people hitting the database server with requests.  This
>doesn't happen right now.  It may happen later on as I write more
>applications for the server but I am looking to see if the performance
>benefit we can get from this server is worth the price tag right now.
>That is why I am looking for ways to tweak postgres on it. 
>
>
>Thanks,
>Juan 
>
>-----Original Message-----
>From: Josh Berkus [mailto:josh@agliodbs.com] 
>Sent: Wednesday, April 05, 2006 6:02 PM
>To: pgsql-performance@postgresql.org
>Cc: Juan Casero (FL FLC); Luke Lonergan
>Subject: Re: [PERFORM] Sun Fire T2000 and PostgreSQL 8.1.3
>
>Juan,
>
>  
>
>>When I hit
>>this pgsql on this laptop with a large query I can see the load spike 
>>up really high on both of my virtual processors.  Whatever, pgsql is 
>>doing it looks like both cpu's are being used indepently.
>>    
>>
>
>Nope, sorry, you're being decieved.   Postgres is strictly one process,
>one 
>query.  
>
>You can use Bizgres MPP to achieve multithreading; it's proprietary and
>you have to pay for it.  It does work well, though.
>
>More importantly, though, you haven't really explained why you care
>about multithreading.
>
>--
>--Josh
>
>Josh Berkus
>Aglio Database Solutions
>San Francisco
>
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