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Re: Postgres vr.s Oracle

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: "Jonah H(dot) Harris" <jonah(dot)harris(at)gmail(dot)com>
Cc: Brian Hurt <bhurt(at)janestcapital(dot)com>, pgsql-advocacy(at)postgresql(dot)org
Subject: Re: Postgres vr.s Oracle
Date: 2008-12-14 19:33:43
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-advocacy

> Hmm... I wonder how scientific his benchmarking is and how well his
> Oracle system was tuned.  Because I've done quite a few performance
> comparisons between Postgres 8.3 and 8.4-dev against a well-tuned
> Oracle8i instance on Linux, and 8i (from 1999) beats the latest
> versions of Postgres quite handily on the same hardware. 

What tests are you running?  There are certainly things, 
performance-wise, which Oracle does better than us.  There are also 
things they do worse.

I'll point out that, the last time we had public comparables 
head-to-head, with *Oracle* doing Oracle's tuning on SpecJAppserver, 
PostgreSQL was around 90% of Oracle *10* on analogous hardware.  In 
internal tests at Sun I can't quote directly, that comparison held on 
succeeding generations of hardware I wasn't allowed to publish :-(

And I'd match the Sun performance labs' knowledge of Oracle tuning 
against yours any day.

Not, on TPC-E on the other hand, Oracle is way ahead of us ... we were 
like 50% last I checked, due mostly to the amount of time it takes us to 
resolve lock conflicts vs. Oracle.  Of course, Microsoft is beating 
Oracle by 50%, so Oracle is not the one to match on that benchmark.


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