[rt-users] Performance problem with SG-clusteren and postgres 8.0.7

[Tomas Olaj]

Just translating a message from our DBA Rafael Martinez,

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We have a huge problem ahead of us which may delay our Service Guard 
Cluster project.

Our last performance test with our new cluster and RT shows that we
have a SQL statement that 'planner" in Postgres 8.0.7 doesn't manage to 
find a good 'plan' for and takes to long to execute.

I have sent an e-mail to pgsql-performance and got a reply back, and a 
solution that implies to upgrade to 8.1.4 when it's shipped.

The e-mail I sent (including the SQL) to pgsql-performance:
http://archives.postgresql.org/pgsql-performance/2006-04/msg00125.php

Answers from Tom Lane (one of the major developers in the PostgreSQL project):
http://archives.postgresql.org/pgsql-performance/2006-04/msg00138.php
http://archives.postgresql.org/pgsql-performance/2006-04/msg00142.php

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Rafael Martinez, <r.m.guerrero at usit.uio.no>
Center for Information Technology Services
University of Oslo, Norway

PGP Public Key: http://folk.uio.no/rafael/

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Tomas, RT management

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________________________________________________________________________
Tomas A. P. Olaj, email: tomas.olaj at usit.uio.no, web: folk.uio.no/tomaso
  University of Oslo / USIT (Center for Information Technology Services)
    System- and Application Management / Applications Management Group