wvanbergen/request-log-analyzer がなかなか使えそうなので、ご紹介。 how to install gem i request-log-analyzer how to use ログ食わせるだけ。 $ request-log-analyzer log/development.log 遅い処理を特定するのにはいい感じ。 ・Request duration - by mean ・View rendering time - by mean ・Database time - by mean Request-log-analyzer, by Willem van Bergen and Bart ten Brinke - version 1.12.1 Website: http://railsdoctors.com development.log: 100% [======