This is a simple command line tool to analyze request log files of both Rails and Merb to produce a performance report. Its purpose is to find what actions are best candidates for optimization.
Analyzes Rails log files (all versions), Merb logs, or any other log format you specify
Combines multiple files and decompresses compressed files (handy if you are using logrotate)
Uses several metrics, including cumulative request time, average request time, process blockers, database and rendering time, HTTP methods and statuses, Rails action cache statistics, etc.) (Sample output: wiki.github.com/wvanbergen/request-log-analyzer/sample-output)
Low memory footprint and reasonably fast (server-safe)
Request log analyzer was designed and built by Willem van Bergen and Bart ten Brinke.
Install request-log-analyzer as a Ruby gem:
$ sudo gem install request-log-analyzer
Alternatively, use the gem from the GitHub gem server:
$ sudo gem install wvanbergen-request-log-analyzer --source http://gems.github.com
To get the best results out of request-log-analyzer, make sure to set up logging correctly: wiki.github.com/wvanbergen/request-log-analyzer/configure-logging for your application.
To analyze a log file and produce a performance report, run request-log-analyzer like this:
$ request-log-analyzer log/production.log
For more details and available command line options, see the project's wiki: wiki.github.com/wvanbergen/request-log-analyzer/basic-usage
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 (firstname.lastname@example.org) or Bart ten Brinke (email@example.com).
Project wiki at GitHub: wiki.github.com/wvanbergen/request-log-analyzer
railsdoctors homepage: railsdoctors.com
wvanbergen's blog posts: techblog.floorplanner.com/tag/request-log-analyzer
barttenbrinke's blog posts: movesonrails.com/articles/tag/analyzer