# Speed up loading rails and running specs on MacBook Pro **URL:** \ **Category:** Rails\ **Created:** [March 19, 2010, 10:42am UTC](https://www.ruby-forum.com/t/speed-up-loading-rails-and-running-specs-on-macbook-pro/185402 "2010-03-19T10:42:30Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![schacke](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/6a8cbe/32.png) [@schacke](https://www.ruby-forum.com/u/schacke)\ **Post date:** [March 19, 2010, 10:42am UTC](https://www.ruby-forum.com/t/speed-up-loading-rails-and-running-specs-on-macbook-pro/185402/1 "2010-03-19T10:42:30Z")
Hi all, some time ago I found out that loading the rails environment and running my specs was much much faster on my iMac than on my MacBook Pro (of course the hardware does explain a bit of that difference). I had compiled my ruby1.8.7 on my MacBook Pro with --enable-shared – enable-pthread option (as recommended in various tutorials). So I just recompiled ruby1.8.7 without those options and after that the rails environment and the specs did actually run much faster: specs before: Finished in 76.090626 seconds 2560 examples, 0 failures specs after: Finished in 24.645957 seconds 2560 examples, 0 failures You know what this means in terms of productivity when doing TDD. Just wanted to know if there’s anyone with similar experiences. Andi