Bealach-na Bo <bealach_na_bo@xxxxxxxxxxx> schrieb: > The node table is tiny (2500 records). What I'm pulling my hair out > over is that ANY Query, even something as simple as select count(*) > form job_log takes of the order of tens of minutes to complete. Just > now I'm trying to run an explain analyze on the above query, but so > far, it's taken 35min! with no result and there is a postgres process at > the top of top > > What am I doing wrong?? The 'explain analyse' don't return a result, but it returns the query plan and importance details, how PG works. That's why you should paste the query and the 'explain analyse' - output. This is very important. Anyway, do you periodical vacuum your DB? My guess: no, and that's why you have many dead rows. 20:26 < akretschmer|home> ??vacuum 20:26 < rtfm_please> For information about vacuum 20:26 < rtfm_please> see http://developer.postgresql.org/~wieck/vacuum_cost/ 20:26 < rtfm_please> or http://www.postgresql.org/docs/current/static/sql-vacuum.html 20:26 < rtfm_please> or http://www.varlena.com/varlena/GeneralBits/116.php 20:27 < akretschmer|home> ??explain 20:27 < rtfm_please> For information about explain 20:27 < rtfm_please> see http://techdocs.postgresql.org/oscon2005/robert.treat/OSCON_Explaining_Explain_Public.sxi 20:27 < rtfm_please> or http://www.gtsm.com/oscon2003/toc.html 20:27 < rtfm_please> or http://www.postgresql.org/docs/current/static/sql-explain.html Read this links for more informations about vacuum and explain. HTH, Andreas -- Really, I'm not out to destroy Microsoft. That will just be a completely unintentional side effect. (Linus Torvalds) "If I was god, I would recompile penguin with --enable-fly." (unknow) Kaufbach, Saxony, Germany, Europe. N 51.05082°, E 13.56889°
