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Re: [PATCH] Prefetch index pages for B-Tree index scans

johnlumby@hotmail.com <johnlumby@hotmail.com>

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From: John Lumby <johnlumby@hotmail.com>
To: pgsql hackers <pgsql-hackers@postgresql.org>
Cc: <klaussfreire@gmail.com>
Date: 2012-10-23T12:44:31Z
Lists: pgsql-hackers 
> From: Claudio Freire <klaussfreire@gmail.com>
> I hope I'm not talking to myself.

Indeed not.   I also looked into prefetching for pure index scans for b-trees  (and extension to use async io).
http://archives.postgresql.org/message-id/BLU0-SMTP31709961D846CCF4F5EB4C2A3930%40phx.gbl

I am not where I have a proper setup this week but will reply at greater length next week.

John