Re: Benchmark Data requested - Mailing list pgsql-performance

From Richard Huxton
Subject Re: Benchmark Data requested
Date
Msg-id 47A887DB.3080002@archonet.com
Whole thread Raw
In response to Re: Benchmark Data requested  (Simon Riggs <simon@2ndquadrant.com>)
List pgsql-performance
Simon Riggs wrote:
> On Tue, 2008-02-05 at 15:05 +0000, Richard Huxton wrote:
>
>>> Only by locking the table, which serializes access, which then slows you
>>> down or at least restricts other options. Plus if you use pg_loader then
>>> you'll find only the first few rows optimized and all the rest not.
>> Hmm - the table-locking requirement is true enough, but why would
>> pg_loader cause problems after the first few rows?
>
> It runs a stream of COPY statements, so only first would be optimized
> with the "empty table optimization".

Ah, if you're allowing multiple commands during the process I can see
how it could get fiddly.

--
   Richard Huxton
   Archonet Ltd

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