Re: Random slow queries

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-----Original Message-----
From: pgsql-performance-owner@xxxxxxxxxxxxxx [mailto:pgsql-performance-owner@xxxxxxxxxxxxxx] On Behalf Of devel.brain99@xxxxxxxx
Sent: Tuesday, June 28, 2016 9:24 PM
To: pgsql-performance@xxxxxxxxxxxxxx
Subject:  Random slow queries

Hi,

I have a weird slow query issue I can't seem to find the cause of, so I'm hoping someone here can shed some light on this.

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Given the reasonably small dataset (a pg_dump of the full database containing about 2500 jobs is less than 1MB) I would think that the whole database fits in memory anyway, making this issue all the more puzzling. Have I missed something obvious?

Best regards,
Roel

______________________________________________________________________________________________________________________

Did you try AUTO_EXPLAIN extension (https://www.postgresql.org/docs/9.3/static/auto-explain.html) for diagnostic purposes?
With auto_explain.loganalize = true it will log automatically EXPLAIN ANALYZE output, rather than just EXPLAIN output.  Turning this parameter ON permanently could have negative impact on over-all performance, so use it judiciously.  

Regards,
Igor


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