ActiveAdmin的性能非常差

我最近将大约5万条记录导入到ActiveAdmin应用程序中，现在性能很差。ActiveAdmin是否设计为可处理此数量的记录？

通过添加remove_filter未使用的过滤器，我的性能得到了稍微改善。

我没有任何关联，我知道这会导致一些性能问题。我的模型结构是完全平坦的，有几个使用单表继承的子类。

我正在使用：

    ruby '2.1.1'

    gem 'rails', '4.1.0'

    gem 'activeadmin', github: 'activeadmin'

我已经将应用程序部署到了Heroku。我从底部的Heroku中插入了一些日志。

这是我的模型代码：

class Product < ActiveRecord::Base

    # Scopes

    scope :upward_trending, -> { where( "status > ?", 100) }
    scope :downward_trending, -> { where( "status < ?", 100) }
    scope :uncategorised, -> {where(category: '') }
    scope :categorised, -> {where.not(category: '') }

end

这是我的资源代码：

ActiveAdmin.register Product do
    menu :label => "All Products", :priority => 1

    config.clear_action_items!

        permit_params :name, :link, :category, :image_url, :price, :interest, :interest_changes, :revenue, :start_date, :end_date, :company, :country, :price_eur, :price_gbp, :price_aud, :price_nzd, :price_cad


                # Input

        form do |f|
        f.inputs 'Details' do

            f.input :country, :as => :string
            f.input :category

     end
    f.actions
  end

    # Scopes
    scope :upward_trending, :default => true
    scope :downward_trending
    scope :all

    # Default Sort
    config.sort_order = "end_date_desc"  

    index do
         column "Product Name", :sortable => :name do |a|
            link_to a.name, a.link, :target => "_blank"
        end
        column "Image" do |a|
            div :class => "image_url" do
                link_to (image_tag a.image_url, class: 'image_url'), a.image_url, :target => "_blank", class: 'fancybox'
            end
        end

        column "Price", :sortable => :price_eur do |a|
            div :class => "number" do
                case current_user.currency
                    when 'EUR'
                        number_to_currency(a.price_eur, unit: "€")
                    when 'GBP'
                        number_to_currency(a.price_gbp, unit: "£")
                    when 'AUD'
                        number_to_currency(a.price_aud, unit: "$")
                    when 'CAD'
                        number_to_currency(a.price_cad, unit: "$")
                    when 'NZD'
                        number_to_currency(a.price_nzd, unit: "$")
                    else
                        number_to_currency(a.price, unit: "$")
                    end
                 end
            end

        column "Status", :sortable => :status do |a|
            div :class => "average" do
                number_to_percentage(a.status, precision: 0) 
            end
        end 

        column :category

        column "Updated", :sortable => "end_date"  do |a|
             if a.end_date > Time.now - 5.days
                 distance_of_time_in_words(a.end_date, Time.now, include_seconds: true) + " ago"
             else
                 a.end_date.to_formatted_s(:long)
             end
        end

        #column :company
        #column :country


    end

    # Sidebar

    #sidebar :ProductSearch, :priority => 1 do
    #    render partial: 'admin/search_products', :locals => {:model_name => 'products'}
    #end

    # Filters

    filter :category, :as => :check_boxes, :collection => proc { Product.all.collect {|dd| dd.category}.uniq.sort }        
    #filter :name, :label => "Product Name", :as => :string, filters: ['contains']
    #filter :price, :label => "USD Price"
    #filter :interest, :label => "Units Sold"
    #filter :company, :as => :select, :collection => proc { Product.all.collect {|dd| dd.company}.uniq.sort }
    filter :country, :as => :select, :collection => proc { Product.all.collect {|dd| dd.country}.uniq.sort }
    filter :end_date, :label => "Date"
    remove_filter :link
    remove_filter :image_url
    remove_filter :price
    remove_filter :interest
    remove_filter :interest_changes
    remove_filter :revenue
    remove_filter :start_date
    remove_filter :price_eur
    remove_filter :price_gbp
    remove_filter :price_aud
    remove_filter :price_nzd
    remove_filter :price_cad

end

这是Heroku在加载资源时的一些日志，在这种情况下，它会超时。

    2014-09-17T21:22:09.778167+00:00 app[web.1]: Started GET "/admin/products" for 91.226.23.198 at 2014-09-17 21:22:09 +0000                                                                                                      
2014-09-17T21:22:09.786533+00:00 app[web.1]: Processing by Admin::ProductsController#index as HTML                                                                                                                             
2014-09-17T21:22:25.828163+00:00 heroku[web.1]: source=web.1 dyno=heroku.29301280.ba6942e6-4473-477d-8fa9-b3de141f9f06 sample#load_avg_1m=0.08 sample#load_avg_5m=0.09 sample#load_avg_15m=0.04                                
2014-09-17T21:22:25.828431+00:00 heroku[web.1]: source=web.1 dyno=heroku.29301280.ba6942e6-4473-477d-8fa9-b3de141f9f06 sample#memory_total=670.15MB sample#memory_rss=511.80MB sample#memory_cache=0.00MB sample#memory_swap=15
8.34MB sample#memory_pgpgin=352746pages sample#memory_pgpgout=221723pages                                                                                                                                                      
2014-09-17T21:22:25.829347+00:00 heroku[web.1]: Process running mem=670M(130.9%)                                                                                                                                               
2014-09-17T21:22:25.829678+00:00 heroku[web.1]: Error R14 (Memory quota exceeded)                                                                                                                                              
2014-09-17T21:22:39.775186+00:00 heroku[router]: at=error code=H12 desc="Request timeout" method=GET path="/admin/products" host=*.herokuapp.com request_id=e3abc8d7-f52d-47b2-bbb0-161823e1a596 fwd="91.226.23.198" d
yno=web.1 connect=1ms service=30001ms status=503 bytes=0                                                                                                                                                                       
2014-09-17T21:22:40.763399+00:00 app[web.1]: E, [2014-09-17T21:22:40.714804 #2] ERROR -- : worker=0 PID:127 timeout (31s > 30s), killing                                                                                       
2014-09-17T21:22:41.133007+00:00 app[web.1]: E, [2014-09-17T21:22:41.132895 #2] ERROR -- : reaped #<Process::Status: pid 127 SIGKILL (signal 9)> worker=0                                                                      
2014-09-17T21:22:43.505823+00:00 app[web.1]: I, [2014-09-17T21:22:43.491614 #158]  INFO -- : worker=0 ready                                                                                                                    
2014-09-17T21:22:46.406853+00:00 heroku[router]: at=info method=GET path="/favicon.ico" host=x.herokuapp.com request_id=9769d818-5231-44db-ab19-d6f7597c308b fwd="91.226.23.198" dyno=web.1 connect=1ms service=5666ms
 status=304 bytes=111                                                 

编辑：

我尝试在end_date上添加索引，以此来对此进行降序排序。不幸的是，这几乎没有改变加载时间：

Sep 17 15:22:34 x app/web.1:  Completed 200 OK in 8556ms (Views: 7377.9ms | ActiveRecord: 1173.7ms) 
Sep 17 15:23:07 x app/web.1:  Completed 200 OK in 8864ms (Views: 7640.8ms | ActiveRecord: 1220.0ms) 
Sep 17 15:28:47 x app/web.1:  Completed 200 OK in 9551ms (Views: 8039.2ms | ActiveRecord: 1442.5ms) 
Sep 17 15:29:01 x app/web.1:  Completed 200 OK in 8921ms (Views: 7651.1ms | ActiveRecord: 1264.0ms)