Postgres Pro
Downloads
Home   >   mailing lists

Re: What O/S or hardware feature would be useful for databases? - Mailing list pgsql-general

From Alexander Staubo
Subject Re: What O/S or hardware feature would be useful for databases?
Date
Msg-id 88daf38c0706161505h214a777bg59bd988daf060419@mail.gmail.com
Whole thread Raw
In response to Re: What O/S or hardware feature would be useful for databases?  (Ron Johnson <ron.l.johnson@cox.net>)
Responses Re: What O/S or hardware feature would be useful for databases?
List pgsql-general
Tree view 
On 6/16/07, Ron Johnson <ron.l.johnson@cox.net> wrote:
> > Hardware acceleration for quickly counting the number of
> > set/unset/matching bits?
>
> x86 doesn't already do that?

I don't think so. The fastest way, I believe, is to use precomputed
lookup tables. Same for finding the least/most significant set/unset
bit, and other operations useful for dealing with bit vectors.

Alexander.

pgsql-general by date:

Previous
From: Martijn van Oosterhout
Date:
Subject: Re: about cursors
Next
From: "Alexander Staubo"
Date:
Subject: Re: Using the GPU