Re: Clock sweep not caching enough B-Tree leaf pages? - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: Clock sweep not caching enough B-Tree leaf pages?
Date
Msg-id 20140415003016.GB9072@momjian.us
Whole thread Raw
In response to Clock sweep not caching enough B-Tree leaf pages?  (Peter Geoghegan <pg@heroku.com>)
Responses Re: Clock sweep not caching enough B-Tree leaf pages?  (Peter Geoghegan <pg@heroku.com>)
List pgsql-hackers
On Mon, Apr 14, 2014 at 10:11:53AM -0700, Peter Geoghegan wrote:
> Has anyone thought about this in the last few years? I know that Tom
> examined the LRU-K paper back in 2000 [5], but was discouraged by some
> kind of contention or CPU overhead (although he did say he intended to
> revisit the question). Obviously a lot has changed in the past 14
> years, particularly with regard to CPU characteristics.

I am glad you are looking at this.  You are right that it requires a
huge amount of testing, but clearly our code needs improvement in this
area.

--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://enterprisedb.com
 + Everyone has their own god. +



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