Re: Multi CPU Queries - Feedback and/or suggestions wanted! - Mailing list pgsql-hackers

From Julius Stroffek
Subject Re: Multi CPU Queries - Feedback and/or suggestions wanted!
Date
Msg-id 48FE4060.8050702@sun.com
Whole thread Raw
In response to Re: Multi CPU Queries - Feedback and/or suggestions wanted!  ("Jeffrey Baker" <jwbaker@gmail.com>)
List pgsql-hackers
Hi Jeffrey,

thank you for the suggestion. Yes, they potentially can, we'll consider 
this.

Julo

Jeffrey Baker wrote:
> I don't see why multiple CPUs can't work on the same node of a plan.  
> For instance, consider a node involving a scan with an expensive 
> condition, like UTF-8 string length.  If you have four CPUs you can 
> bring to bear, each CPU could take every fourth page, computing the 
> expensive condition for each tuple in that page.  The results of the 
> scan can be retired asynchronously to the next node above.


>
> -jwb


pgsql-hackers by date:

Previous
From: Tom Lane
Date:
Subject: Re: Regression in IN( field, field, field ) performance
Next
From: "David E. Wheeler"
Date:
Subject: Re: So what's an "empty" array anyway?