Horton

Re: Small improvement to compactify_tuples

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Sokolov Yura <funny.falcon@postgrespro.ru>
Cc: Claudio Freire <klaussfreire@gmail.com>, Alvaro Herrera <alvherre@2ndquadrant.com>, Heikki Linnakangas <hlinnaka@iki.fi>, PostgreSQL-Dev <pgsql-hackers@postgresql.org>
Date: 2017-11-03T21:23:37Z
Lists: pgsql-hackers 
I wrote:
> Have not looked at the 0002 patch yet.

I looked at that one, and it seems to be a potential win with no
downside, so pushed.  (I tweaked it slightly to avoid an unnecessary
conflict with the test patch I posted earlier.)

			regards, tom lane

Commits

  1. Avoid looping through line pointers twice in PageRepairFragmentation().

  2. Reduce pinning and buffer content locking for btree scans.

  3. Speed up in-memory tuplesorting.