ruby script/plugin install git://github.com/wvanbergen/rails-log-analyzer.git

Usage
--------------------------------

Usage: ruby analyze.rb [FILE] [OPTION]
Analyze the given log FILE with the given OPTION
Example: ruby analyze.rb mongrel.log

Options:
 -g, --guess-database-time     Guess database times if they are not explicitly logged.
 -f, --fast                    Parse 'Completed' log lines only (displays less information).
 -c, --amount          The amount of results per category. Defaults to 10.
 -o, --output        A comma separated list of the reports you want. Defaults to all.

Example
--------------------------------

Note that this example was shortened for your viewing pleasure.

$ ruby analyze.rb /var/log/my_app.log

Rails log analyzer, by Willem van Bergen and Bart ten Brinke

Processing all log lines...
========================================================================
Successfully analyzed 58908 requests from log file

Timestamp first request: 2008-07-13T06:25:58+00:00
Timestamp last request:  2008-07-20T06:18:53+00:00
Total time analyzed: 7 days

Top 10 most requested actions
========================================================================
/overview/:date/                                  : 19359 requests
/overview/day/:date/                              : 6365 requests
/overview/:date/set/                              : 5589 requests
/overview/                                        : 3985 requests
/clients/:id/                                     : 1976 requests
........

Top 10 actions by time - cumulative
========================================================================
/overview/:date/                                  :   9044.582s [19359 requests]
/overview/                                        :   8478.767s [3985 requests]
/overview/:date/set/                              :   3309.041s [5589 requests]
/clients/:id/products/:id/                        :   1479.911s [924 requests]
/clients/:id/                                     :    750.080s [1976 requests]
........

Top 10 actions by time - per request mean
========================================================================
/overview/                                        :      2.128s [3985 requests]
/clients/:id/products/:id/                        :      1.602s [924 requests]
/overview/:date/set/                              :      0.592s [5589 requests]
/overview/:date/                                  :      0.467s [19359 requests]
/clients/:id/                                     :      0.380s [1976 requests]
........

Top 10 worst DB offenders - cumulative time
========================================================================
/overview/:date/                                  :   8773.993s [19359 requests]
/overview/                                        :   8394.754s [3985 requests]
/overview/:date/set/                              :   3307.928s [5589 requests]
/clients/:id/products/:id/                        :   1425.220s [924 requests]
/clients/:id/                                     :    535.229s [1976 requests]
........

Top 10 worst DB offenders - mean time
========================================================================
/overview/:id/:id/:id/print/                      :      6.994s [448 requests]
/overview/                                        :      2.128s [3985 requests]
/clients/:id/products/:id/                        :      1.602s [924 requests]
/overview/:date/set/                              :      0.592s [5589 requests]
/overview/:date/                                  :      0.467s [19359 requests]
........

Mongrel process blockers (> 1.0 seconds) - frequency
========================================================================
/overview/:date/                                  :   7494.233s [3144 requests]
/overview/                                        :   8320.293s [1549 requests]
/overview/:date/set/                              :   1149.235s [803 requests]
/overview/:id/:id/:id/print/new/                  :    613.693s [341 requests]
/clients/:id/products/:id/                        :   1370.693s [313 requests]
........

Requests graph - per hour
========================================================================
         ........
         7:00 - 2731                 : XXXXXXX
         8:00 - 6139                 : XXXXXXXXXXXXXXXX
         9:00 - 7465                 : XXXXXXXXXXXXXXXXXXXX
        10:00 - 7118                 : XXXXXXXXXXXXXXXXXXX
        11:00 - 7409                 : XXXXXXXXXXXXXXXXXXX
        12:00 - 6450                 : XXXXXXXXXXXXXXXXX
        13:00 - 5377                 : XXXXXXXXXXXXXX
        14:00 - 6058                 : XXXXXXXXXXXXXXXX
        15:00 - 4156                 : XXXXXXXXXXX
        16:00 - 2767                 : XXXXXXX
        17:00 - 1598                 : XXXX
        18:00 - 792                  : XX
        ........

There is currently no advanced documentation for this plugin.