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After Vacuum Analyse - Procedure performance not improved - Innner select is faster

From: "Anoo Sivadasan Pillai" <aspillai(at)in(dot)rm(dot)com>
To: <pgsql-performance(at)postgresql(dot)org>
Subject: After Vacuum Analyse - Procedure performance not improved - Innner select is faster
Date: 2008-01-09 04:03:57
Message-ID: 772CDA49C515244FA14E34443F62E56403AFC90C@EX-INDIA1.internal.rmplc.net (view raw or flat)
Thread:
Lists: pgsql-performance
Hi All,

 

I have a procedure which contains only one Select statement. The
procedure take more time than expected to complete, the select statement
inside the procedure was taking about 2 minutes to complete. 

 

After running a Vacuum Analyze on the underlying tables the select
statement could complete within seconds. But the procedure was still
taking long time. 

 

I tried after recreating the procedure, the procedure is taking only a
few seconds after recreation.

 

Why the procedure is not getting the performance advantage of Vacuum
analyse?  

 

Regards, 

Anoo

 

 
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Next:From: Alvaro HerreraDate: 2008-01-09 05:06:44
Subject: Re: After Vacuum Analyse - Procedure performance notimproved - Innner select is faster
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Subject: Re: Performance of aggregates over set-returning functions

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