This is a simple command line tool to analyze request log files in various formats to produce a performance report. Its purpose is to find what actions are best candidates for optimization.

• Analyzes log files. Currently supports: Amazon S3, Apache, Delayed::Job, Merb, Mysql, PostgreSQL, Rack, Rails and more.

• Combines multiple files and decompresses compressed files, which comes in handy if you are using logrotate.

• Uses several metrics, including cumulative request time, mean request time, process blockers, database and rendering time, HTTP methods and statuses, Rails action cache statistics, etc.) (Sample output: github.com/wvanbergen/request-log-analyzer/wiki/sample-output)

• Runs on any MRI 1.9+ compatible Ruby, has a low memory footprint and is reasonably fast, so it is safe to run on a production server.

See the project wiki at github.com/wvanbergen/request-log-analyzer/wiki for documentation and additional information.

Install request-log-analyzer as a Ruby gem (you might need to run this command as root by prepending sudo to it):

$ gem install request-log-analyzer

To analyze a Rails log file and produce a performance report, run request-log-analyzer like this:

$ request-log-analyzer log/production.log

For more details, other file formats, and available command line options, see the project’s wiki at github.com/wvanbergen/request-log-analyzer/wiki

Request-log-analyzer was designed and built by Willem van Bergen and Bart ten Brinke.

Do you have a rails application that is not performing as it should? If you need an expert to analyze your application, feel free to contact either Willem van Bergen (willem@railsdoctors.com) or Bart ten Brinke (bart@railsdoctors.com).

• Project wiki at GitHub: github.com/wvanbergen/request-log-analyzer/wiki

• Issue tracker at GitHub: github.com/wvanbergen/request-log-analyzer/issues

• The Railsdoctors homepage: railsdoctors.com

• This software is MIT licensed. Check out CONTRIBUTING.rdoc if you want to help out on this project.