From: Dimitri Fontaine <dfontaine@hi-media.com>
To: pgsql-performance@postgresql.org
Cc: Simon Riggs <simon@2ndquadrant.com>
Cc: Richard Huxton <dev@archonet.com>
Cc: Jignesh K. Shah <J.K.Shah@sun.com>
Cc: Greg Smith <gsmith@gregsmith.com>
Subject: Re: Benchmark Data requested
Date: Tue, 5 Feb 2008 18:01:50 +0100
Message-ID: <200802051801.52963.dfontaine@hi-media.com> (raw)
In-Reply-To: <1202225207.4252.718.camel@ebony.site>
References: <1202150236.4252.521.camel@ebony.site>
<47A87B2E.7050205@archonet.com>
<1202225207.4252.718.camel@ebony.site>
Le mardi 05 février 2008, Simon Riggs a écrit :
> It runs a stream of COPY statements, so only first would be optimized
> with the "empty table optimization".
The number of rows per COPY statement is configurable, so provided you have an
estimation of the volume to import (wc -l), you could tweak this number for
lowering the stream (down to 1 COPY maybe)...
But basically a COPY run should be kept in memory (and we're talking about
high volumes here) and in case of error processing you'd want it not that
huge after all...
--
dim
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To: pgsql-performance@postgresql.org
Cc: dfontaine@hi-media.com, simon@2ndquadrant.com, dev@archonet.com, J.K.Shah@sun.com, gsmith@gregsmith.com
Subject: Re: Benchmark Data requested
In-Reply-To: <200802051801.52963.dfontaine@hi-media.com>
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