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Bulk Insert tuning

From: Simon Riggs <simon(at)2ndquadrant(dot)com>
To: pgsql-patches(at)postgresql(dot)org
Subject: Bulk Insert tuning
Date: 2008-02-26 14:43:51
Message-ID: 1204037031.4252.301.camel@ebony.site (view raw or flat)
Thread:
Lists: pgsql-patches
Following patch implements a simple mechanism to keep a buffer pinned
while we are bulk loading.

Performance gains measured as +20% gain for CREATE TABLE as SELECT, and
15-17% for COPY on very short rows. Measurable difference drops away and
is not measurable at all at 1000/bytes per row. 

As a result, patch doesn't bother to implement buffer pinning for TOAST
operations.

Can I ask for some independent performance results please?

-- 
  Simon Riggs
  2ndQuadrant  http://www.2ndQuadrant.com 

Attachment: fast_copy.v3.patch
Description: text/x-patch (15.7 KB)

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