# Active Scaffold Performance **URL:** \ **Category:** Rails\ **Created:** [November 9, 2009, 9:02pm UTC](https://www.ruby-forum.com/t/active-scaffold-performance/178709 "2009-11-09T21:02:38Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![ken](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/cc9497/32.png) [@ken](https://www.ruby-forum.com/u/ken)\ **Post date:** [November 9, 2009, 9:02pm UTC](https://www.ruby-forum.com/t/active-scaffold-performance/178709/1 "2009-11-09T21:02:38Z")
Hi Everyone, I know this is a recurring topic, but currently my application is running very slow and I would like to figure out why. Every transaction, except for the login page, have an average response time in the 8,000~ 14,000ms range (DB: 300ms range), which is absurd. I have implemented action caching and fragment caching on the views, but those only help when there is a cache hit. On a miss, it still takes 8+ seconds to load. I tried monitoring the application on new\_relic and found out that my view takes up for nearly 90% of the load time. Furthermore, I have ran ruby-prof on one of the slower transactions and found out that 65% of the transaction was from the method ‘render\_without\_active\_scaffold’ which is part of the active\_scaffold plugin. I suspect the fact that the transaction calls ‘render :partial’ 45 times doesn’t help much, but the application is pretty complex, and those 45 partial renderings are quite necessary. I’ve searched on google to see if anybody else had problems with activescaffold, but that doesn’t seem to be the case… Some things I’ve tried - Replace helper methods in the views with the html they produce. - Caching (action, fragment) - Eager loading (although DB query times are in the 300ms range) Does anybody have any idea why ‘render\_without\_active\_scaffold’ or any other rails function (like render partial) would take so long? Is it because my application is running on a VM? Thanks in advance! ---
**Author:** ![ken](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/cc9497/32.png) [@ken](https://www.ruby-forum.com/u/ken)\ **Post date:** [November 9, 2009, 9:29pm UTC](https://www.ruby-forum.com/t/active-scaffold-performance/178709/2 "2009-11-09T21:29:12Z")
ken wrote: > Does anybody have any idea why ‘render\_without\_active\_scaffold’ or any > other rails function (like render partial) would take so long? > > Is it because my application is running on a VM? > > Thanks in advance! When you installed active\_scaffold, is used a method Molule::alias\_method\_chain to branch off the render method. The new functionality that active\_scaffold provided was named render\_with\_active\_scaffold and the EXISTING one was renamed to: render\_without\_active\_scaffold. So in effect, when you see the “without” version in your call stack, it means you are using the version prior to when you installed active\_scaffold. This will lead you to the conclusion that your bottleneck IS NOT with active\_scaffold… hth ilan