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#1971 ✓stale
Matijs van Zuijlen

ActiveRecord::Base#compute_type is slow

Reported by Matijs van Zuijlen | February 14th, 2009 @ 04:28 PM | in 3.x

I've created a profile like so:

./script/performance/profiler 'Article.find(:all)' 10 graph

and it turns out of the 0.88 seconds total, 0.22 is spent in compute_type. Most of this time is again spent in store_full_sti_class, a simple boolean flag accessor.

Perhaps store_full_sti_class can be made into a cattr_accessor, rather than a superclass_delegating_accessor, to avoid the time consuming call to respond_to? and hence ActiveRecord::DynamicFinderMatch#initialize.

The rails application is typo (, using rails 2.2.2.

Full profile attached.

Comments and changes to this ticket

  • Jeremy Kemper

    Jeremy Kemper May 4th, 2010 @ 06:48 PM

    • Milestone changed from 2.x to 3.x
  • Santiago Pastorino

    Santiago Pastorino February 2nd, 2011 @ 04:41 PM

    • State changed from “new” to “open”
    • Tag changed from 2.2.2, activerecord, performance to 222, activerecord, performance
    • Importance changed from “” to “”

    This issue has been automatically marked as stale because it has not been commented on for at least three months.

    The resources of the Rails core team are limited, and so we are asking for your help. If you can still reproduce this error on the 3-0-stable branch or on master, please reply with all of the information you have about it and add "[state:open]" to your comment. This will reopen the ticket for review. Likewise, if you feel that this is a very important feature for Rails to include, please reply with your explanation so we can consider it.

    Thank you for all your contributions, and we hope you will understand this step to focus our efforts where they are most helpful.

  • Santiago Pastorino

    Santiago Pastorino February 2nd, 2011 @ 04:41 PM

    • State changed from “open” to “stale”

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