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Re: core 2 duo

From: Frank Bax <fbax(at)sympatico(dot)ca>
To: pgsql-novice(at)postgresql(dot)org
Subject: Re: core 2 duo
Date: 2006-12-18 01:36:50
Message-ID: 5.2.1.1.0.20061217203149.04a20b50@pop6.sympatico.ca (view raw or flat)
Thread:
Lists: pgsql-novice
At 08:21 AM 12/17/06, Sean Davis wrote:

>Frank Bax wrote:
>>This might be old news to a lot of people, but I'm wondering if pg will 
>>automatically use both processors concurrently in a Core 2 Duo 
>>system.  I'm planning to install OpenBSD 4.0 with SMP kernel (bsd.mp) and 
>>install pg using their binary 8.1.5 package.
>
>
>I don't think so.  These SMP machines are simply two processors.  If you 
>run one query, only one process is used, so only one processor.  If you 
>have two independent queries (from two different users, for example), two 
>processes will be used and then the second processor can be utilized.


I assumed it wouldn't use two processors on one query.  I was wondering if 
independent queries would automatically use multiple processors when 
available; or if some special action had to be invoked (like compile time 
switch or config option) before this behaviour was possible.  Sounds like 
we get this behaviour "out of the box".  Great. 


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