Re: Heap WARM Tuples - Design Draft - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: Heap WARM Tuples - Design Draft
Date
Msg-id 20160804174943.GR1702@momjian.us
Whole thread Raw
In response to Re: Heap WARM Tuples - Design Draft  (Pavan Deolasee <pavan.deolasee@gmail.com>)
List pgsql-hackers
On Thu, Aug  4, 2016 at 11:04:49PM +0530, Pavan Deolasee wrote:
> If the root tuple still exists, we store the WARM flag (or
> HEAP_RECHECK_REQUIRED as used in the original post) in the tuple header itself.
> When the root tuple becomes dead and HOT prune decides to replace it with a
> LP_REDIRECT line pointer, the information is moved to lp_len (which is
> currently set to 0 for LP_REDIRECT items). Does that answer your question?

Ah, brilliant!

--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://enterprisedb.com

+ As you are, so once was I. As I am, so you will be. +
+                     Ancient Roman grave inscription +



pgsql-hackers by date:

Previous
From: Greg Stark
Date:
Subject: Pgbench performance tuning?
Next
From: Andres Freund
Date:
Subject: Re: Pgbench performance tuning?