Rails 3.0.3 out - Faster Active Record plus fixes

Given the 20-odd hours 3.0.2 lasted I'm waiting a day or two before even regression testing against this. While I love the pace of development I do wish they were a little more thorough with the release testing at times.

I saw Aaron Patterson's presentation at RubyConf this year, which I have to say was just as funny as informative. It was essentially all about squeezing every bit of performance out of ARel. He ended up rewriting a good portion of ARel as well. If anyone is interested, the ticket with benchmarking stats can be viewed here: <a href="https://rails.lighthouseapp.com/projects/8994/tickets/5098-rails-3-beta-4-activerecord-5x-slower-than-rails-235" rel="nofollow">https://rails.lighthouseapp.com/projects/8994/tickets/5098-r...</a>

Has anybody benchmarked AR performance versus Sequel or DataMapper?<p>I've noticed a dearth of Rails3 performance discussion in general (usually there's a ton of articles on any Rails-related topic).