Re: firebird X postgresql 8.1.2 windows, performance comparison

From: "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com>
To: andremachado <andremachado(at)techforce(dot)com(dot)br>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: firebird X postgresql 8.1.2 windows, performance comparison
Date: 2006-03-14 21:10:51
Message-ID: 20060314211050.GU45250@pervasive.com
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On Tue, Mar 14, 2006 at 09:02:49AM -0300, andremachado wrote:
> Hello,
> Attached is a file containing the problematic queries cited yesterday, with
> "explain", "\di" and "show all" outputs.
> The first one finished in almost 4 hours. Firebird for windows finished in 1m30s.
> The second one CRASHED after some hours, without finishing. The error message
> is at the file too.

PANIC: could not open file "pg_xlog/0000000100000018000000E7" (log file
24, segment 231): Invalid argument

IIRC that means you have a data corruption issue.

As for the queries, EXPLAIN ANALYZE would be in order here. It looks
like the first one might benefit from increasing work_memory.
--
Jim C. Nasby, Sr. Engineering Consultant jnasby(at)pervasive(dot)com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461

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