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From: Greg Smith <greg@2ndquadrant.com>
To: raghavendra t <raagavendra.rao@gmail.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: How to fast the REINDEX
Date: Thu, 01 Apr 2010 07:36:54 -0400
Message-ID: <4BB48556.2030406@2ndquadrant.com> (raw)
In-Reply-To: <p2ubc7de5a31003311351p83987eedpbb86727ab9fa9ca3@mail.gmail.com>
References: <p2ubc7de5a31003311351p83987eedpbb86727ab9fa9ca3@mail.gmail.com>

raghavendra t wrote:
> 1. What are the parameters will effect, when issuing the REINDEX command
> 2. Best possible way to increase the spead of the REINDEX

If you haven't done the usual general tuning on your server, that might 
help.  http://wiki.postgresql.org/wiki/Tuning_Your_PostgreSQL_Server is 
an introduction.  If increasing maintainance_work_mem alone doesn't 
help, I'd try increases to checkpoint_segments and then shared_buffers 
next.  Those are the three parameters mostly likely to speed that up.

The things already suggested in this thread are still valid though.  
Needing to REINDEX suggests there may be a problem with your database 
better addressed by running autovacuum more regularly.

-- 
Greg Smith  2ndQuadrant US  Baltimore, MD
PostgreSQL Training, Services and Support
greg@2ndQuadrant.com   www.2ndQuadrant.us




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