Re: Adding foreign key performance

From: Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au>
To: Stephan Szabo <sszabo(at)megazone(dot)bigpanda(dot)com>
Cc: Jeff <threshar(at)torgo(dot)978(dot)org>, pgsql-performance(at)postgresql(dot)org
Subject: Re: Adding foreign key performance
Date: 2003-10-29 01:47:28
Message-ID: 3F9F1C30.4010306@familyhealth.com.au
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>>Just loaded up delicious 7.4b5 and wow...
>>
>>sort_mem 8192: 137038ms [lots of tmp file activity]
>>sort_mem 256000: 83109ms
>
>
> Hmm, 298383 -> 83109 (since those are the 256k numbers). Not as
> much as I'd have hoped, but I'll take a factor of 3.

Hi Jeff,

Could you let us know the load times when you have done:

1. A full ANALYZE
2. A delete all from pg_statistic

So we can see if ANALYZE stats make much difference?

Chris

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