Rails Analyzer Tools contains Bench, Crawler, RailsStat, IOTail and SyslogLogger libraries, and the programs bench, crawl and rails_stat based on these libraries.

I have used bench and crawl to tune the number of FastCGI processes running on 43things.com, determine if HyperThreading would give a performance benefit or not (it did) and find a fatal threading bug in MySQL.

rails_stat is useful to see how much traffic your Rails site is doing.

Changes from 1.0.0 include the addition of the crawl and bench utilities and a new and improved SyslogLogger with greater Logger compatibility.

Further documentation can be found at http://rails-analyzer.rubyforge.org/hacks/

Rails Analyzer Tools 1.1.0 can be downloaded from:

http://rubyforge.org/frs/shownotes.php?release_id=2985

Or installed via:

gem install rails_analyzer_tools