diff --git a/app/models/build_list.rb b/app/models/build_list.rb
index 27a06e29b..313041373 100644
--- a/app/models/build_list.rb
+++ b/app/models/build_list.rb
@@ -290,6 +290,18 @@ class BuildList < ActiveRecord::Base
     BuildList.where(:id => extra_build_lists).where('status != ?', BUILD_PUBLISHED).count == 0
   end
 
+  def human_average_build_time
+    I18n.t('layout.project_statistics.human_average_build_time', {:hours => (average_build_time/3600).to_i, :minutes => (average_build_time%3600/60).to_i})
+  end
+
+  def formatted_average_build_time
+    "%02d:%02d" % [average_build_time / 3600, average_build_time % 3600 / 60]
+  end
+
+  def average_build_time
+    project.project_statistics.where(:arch_id => arch_id).first.try(:average_build_time) || 0
+  end
+
   def self.human_status(status)
     I18n.t("layout.build_lists.statuses.#{HUMAN_STATUSES[status]}")
   end
diff --git a/app/models/build_list_observer.rb b/app/models/build_list_observer.rb
index dc1921ecf..d9d4c0bc0 100644
--- a/app/models/build_list_observer.rb
+++ b/app/models/build_list_observer.rb
@@ -14,9 +14,14 @@ class BuildListObserver < ActiveRecord::Observer
 
         if record.status == BuildList::SUCCESS
           # Update project average build time
-          build_count = record.project.build_count
-          new_av_time = ( record.project.average_build_time * build_count + record.duration ) / ( build_count + 1 )
-          record.project.update_attributes({ :average_build_time => new_av_time, :build_count => build_count + 1 }, :without_protection => true)
+          begin
+            statistic = record.project.project_statistics.find_or_create_by_arch_id(record.arch_id)
+          rescue ActiveRecord::RecordNotUnique
+            retry
+          end
+          build_count = statistic.build_count
+          new_av_time = ( statistic.average_build_time * build_count + record.duration ) / ( build_count + 1 )
+          statistic.update_attributes(:average_build_time => new_av_time, :build_count => build_count + 1)
         end
       end
     end
diff --git a/app/models/project.rb b/app/models/project.rb
index 9c4ff4c63..64b9c776c 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -15,6 +15,7 @@ class Project < ActiveRecord::Base
   has_many :project_to_repositories, :dependent => :destroy
   has_many :repositories, :through => :project_to_repositories
   has_many :project_tags, :dependent => :destroy
+  has_many :project_statistics, :dependent => :destroy
   
   has_many :build_lists, :dependent => :destroy
   has_many :hooks, :dependent => :destroy
@@ -193,14 +194,6 @@ class Project < ActiveRecord::Base
     end
   end
 
-  def human_average_build_time
-    I18n.t("layout.projects.human_average_build_time", {:hours => (average_build_time/3600).to_i, :minutes => (average_build_time%3600/60).to_i})
-  end
-
-  def formatted_average_build_time
-    "%02d:%02d" % [average_build_time / 3600, average_build_time % 3600 / 60]
-  end
-
   def destroy_project_from_repository(repository)
     AbfWorker::BuildListsPublishTaskManager.destroy_project_from_repository self, repository
   end
diff --git a/app/models/project_statistic.rb b/app/models/project_statistic.rb
new file mode 100644
index 000000000..717c5d8ad
--- /dev/null
+++ b/app/models/project_statistic.rb
@@ -0,0 +1,10 @@
+class ProjectStatistic < ActiveRecord::Base
+
+  belongs_to :arch
+  belongs_to :project
+
+  validates :arch_id, :project_id, :average_build_time, :build_count, :presence => true
+  validates :project_id, :uniqueness => {:scope => :arch_id}
+
+  attr_accessible :average_build_time, :build_count
+end
diff --git a/app/views/api/v1/projects/index.json.jbuilder b/app/views/api/v1/projects/index.json.jbuilder
index 8bfd59136..b6d4296c8 100644
--- a/app/views/api/v1/projects/index.json.jbuilder
+++ b/app/views/api/v1/projects/index.json.jbuilder
@@ -1,6 +1,6 @@
 json.projects @projects do |project|
   json.partial! 'project', :project => project
-  json.(project, :visibility, :description, :ancestry, :has_issues, :has_wiki, :default_branch, :is_package, :average_build_time, :publish_i686_into_x86_64)
+  json.(project, :visibility, :description, :ancestry, :has_issues, :has_wiki, :default_branch, :is_package, :publish_i686_into_x86_64)
   json.created_at project.created_at.to_i
   json.updated_at project.updated_at.to_i
   json.partial! 'api/v1/shared/owner', :owner => project.owner
diff --git a/app/views/api/v1/projects/show.json.jbuilder b/app/views/api/v1/projects/show.json.jbuilder
index 7f1f963c9..b820cf415 100644
--- a/app/views/api/v1/projects/show.json.jbuilder
+++ b/app/views/api/v1/projects/show.json.jbuilder
@@ -1,12 +1,17 @@
 json.project do
   json.partial! 'project', :project => @project
-  json.(@project, :visibility, :description, :ancestry, :has_issues, :has_wiki, :default_branch, :is_package, :average_build_time, :publish_i686_into_x86_64)
+  json.(@project, :visibility, :description, :ancestry, :has_issues, :has_wiki, :default_branch, :is_package, :publish_i686_into_x86_64)
   json.created_at @project.created_at.to_i
   json.updated_at @project.updated_at.to_i
   json.partial! 'api/v1/shared/owner', :owner => @project.owner
   json.maintainer do
     json.partial! 'api/v1/shared/member', :member => @project.maintainer
   end
+
+  json.project_statistics @project.project_statistics do |statistic|
+    json.(statistic, :average_build_time, :build_count, :arch_id)
+  end
+
   json.repositories @project.repositories do |repo|
     json.(repo, :id, :name)
     json.url api_v1_repository_path(repo.name, :format => :json)
diff --git a/app/views/projects/build_lists/_build_list.html.haml b/app/views/projects/build_lists/_build_list.html.haml
index 40b8df982..1b9476e79 100644
--- a/app/views/projects/build_lists/_build_list.html.haml
+++ b/app/views/projects/build_lists/_build_list.html.haml
@@ -6,10 +6,10 @@
     - if BuildList::HUMAN_STATUSES[build_list.status].in? [:build_pending, :build_started, :build_publish]
       %time.js-relative-date{:datetime => build_list.updated_at.strftime("%FT%T%:z"), :title => build_list.updated_at.strftime("%F %T")}
         = build_list.updated_at.strftime "%F %T"
-      - if build_list.build_started? && ((build_list.project.average_build_time || 0) > 0)
+      - if build_list.build_started? && (build_list.average_build_time > 0)
         \/
         %time
-          = build_list.project.formatted_average_build_time
+          = build_list.formatted_average_build_time
   - if build_list.project.present?
     %td= link_to build_list.project.name_with_owner, build_list.project
     %td= build_list_version_link(build_list)
diff --git a/app/views/projects/build_lists/show.html.haml b/app/views/projects/build_lists/show.html.haml
index ca48b700b..956a18845 100644
--- a/app/views/projects/build_lists/show.html.haml
+++ b/app/views/projects/build_lists/show.html.haml
@@ -98,7 +98,7 @@
     %br
     .leftlist
     .rightlist
-      = "#{@build_list.human_current_duration} / #{@build_list.project.human_average_build_time}"
+      = "#{@build_list.human_current_duration} / #{@build_list.human_average_build_time}"
     .both
 
   - if @build_list.can_cancel? && can?(:cancel, @build_list)
diff --git a/config/application.yml.sample b/config/application.yml.sample
index 10a879779..a718c32ff 100644
--- a/config/application.yml.sample
+++ b/config/application.yml.sample
@@ -9,6 +9,9 @@ common: &common
     - 127.0.0.100
   abf_worker:
     publish_workers_count: 2
+    log_server:
+      host: 127.0.0.1
+      port: 6379
   keys:
     key_pair_secret_key: 'key_pair_secret_key'
     airbrake_api_key: 'airbrake_api_key'
diff --git a/config/application.yml.travis b/config/application.yml.travis
index f10f585ec..6715379ef 100644
--- a/config/application.yml.travis
+++ b/config/application.yml.travis
@@ -9,6 +9,9 @@ common: &common
     - 127.0.0.100
   abf_worker:
     publish_workers_count: 2
+    log_server:
+      host: 127.0.0.1
+      port: 6379
   keys:
     key_pair_secret_key: 'key_pair_secret_key'
     airbrake_api_key: 'airbrake_api_key'
diff --git a/config/locales/models/project.en.yml b/config/locales/models/project.en.yml
index bf018c003..542571860 100644
--- a/config/locales/models/project.en.yml
+++ b/config/locales/models/project.en.yml
@@ -47,7 +47,6 @@ en:
       sections: Sections
       has_issue_description: Tracker adds a lightweight issue management system tightly integrated with your repository.
       has_wiki_description: Wikis are the simplest way to allow other users to contribute content. Any user can create and edit pages for documentation, examples, support or anything you wish.
-      human_average_build_time: Expected time is %{hours} h. %{minutes} min.
       git_global_setup: Git global setup
       create_repository: Create Repository
       move_files_to_folder: Move files you need to the project or create them.
diff --git a/config/locales/models/project.ru.yml b/config/locales/models/project.ru.yml
index 7f9cfc5fc..560f96151 100644
--- a/config/locales/models/project.ru.yml
+++ b/config/locales/models/project.ru.yml
@@ -3,7 +3,7 @@ ru:
     projects:
       branches: Ветки
       delete_branch: Удалить ветку
-      restore_branch: Востановить ветку
+      restore_branch: Восстановить ветку
       no_branches: Нет веток
       base_branch: Текущая ветка
       compare: Сравнить
@@ -47,7 +47,6 @@ ru:
       sections: Разделы
       has_issue_description: Трэкер предоставляет лекговесный менеджер для задач по разработке Вашего проекта.
       has_wiki_description: Wiki - это самый простой способ предоставить другим вносить свой вклад в развитие Вашего проекта. Каждый пользователь нашего сервиса может использовать Wiki для документирования, примеров, поддержки или всего другого, в чем у Вас появится необходимость.
-      human_average_build_time: 'Ожидаемое время: %{hours} ч. %{minutes} мин.'
       git_global_setup: Общие настройки Git
       create_repository: Создание репозитория
       move_files_to_folder: Переместите нужные файлы в проект или создайте их.
diff --git a/config/locales/models/project_statistic.en.yml b/config/locales/models/project_statistic.en.yml
new file mode 100644
index 000000000..aff286d3e
--- /dev/null
+++ b/config/locales/models/project_statistic.en.yml
@@ -0,0 +1,14 @@
+en:
+  layout:
+    project_statistics:
+      human_average_build_time: Expected time is %{hours} h. %{minutes} min.
+
+  flash:
+    project_statistic:
+
+
+  activerecord:
+    models:
+      project_statistic: Project statistic
+    attributes:
+      project_statistic:
\ No newline at end of file
diff --git a/config/locales/models/project_statistic.ru.yml b/config/locales/models/project_statistic.ru.yml
new file mode 100644
index 000000000..71e41b735
--- /dev/null
+++ b/config/locales/models/project_statistic.ru.yml
@@ -0,0 +1,16 @@
+ru:
+  layout:
+    project_statistics:
+      human_average_build_time: 'Ожидаемое время: %{hours} ч. %{minutes} мин.'
+
+  flash:
+    project_statistic:
+
+
+  activerecord:
+    models:
+      project_statistic: Статистика проекта
+    attributes:
+      project_statistic:
+
+
diff --git a/db/migrate/20130731120901_create_project_statistics.rb b/db/migrate/20130731120901_create_project_statistics.rb
new file mode 100644
index 000000000..3d7103210
--- /dev/null
+++ b/db/migrate/20130731120901_create_project_statistics.rb
@@ -0,0 +1,13 @@
+class CreateProjectStatistics < ActiveRecord::Migration
+  def change
+    create_table :project_statistics do |t|
+      t.integer :average_build_time,  :null => false, :default => 0
+      t.integer :build_count,         :null => false, :default => 0
+      t.integer :arch_id,             :null => false
+      t.integer :project_id,          :null => false
+
+      t.timestamps
+    end
+    add_index :project_statistics, [:project_id, :arch_id], :unique => true
+  end
+end
diff --git a/db/migrate/20130731130518_drop_average_build_time_and_build_count_from_project.rb b/db/migrate/20130731130518_drop_average_build_time_and_build_count_from_project.rb
new file mode 100644
index 000000000..723d331aa
--- /dev/null
+++ b/db/migrate/20130731130518_drop_average_build_time_and_build_count_from_project.rb
@@ -0,0 +1,11 @@
+class DropAverageBuildTimeAndBuildCountFromProject < ActiveRecord::Migration
+  def up
+    remove_column :projects, :average_build_time
+    remove_column :projects, :build_count
+  end
+
+  def down
+    add_column :projects, :average_build_time, :integer, :null => false, :default => 0
+    add_column :projects, :build_count, :integer, :null => false, :default => 0
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index b1cd1d2d7..67a46f31b 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20130724105821) do
+ActiveRecord::Schema.define(:version => 20130731130518) do
 
   create_table "activity_feeds", :force => true do |t|
     t.integer  "user_id",    :null => false
@@ -376,6 +376,17 @@ ActiveRecord::Schema.define(:version => 20130724105821) do
 
   add_index "project_imports", ["platform_id", "name"], :name => "index_project_imports_on_name_and_platform_id", :unique => true, :case_sensitive => false
 
+  create_table "project_statistics", :force => true do |t|
+    t.integer  "average_build_time", :default => 0, :null => false
+    t.integer  "build_count",        :default => 0, :null => false
+    t.integer  "arch_id",                           :null => false
+    t.integer  "project_id",                        :null => false
+    t.datetime "created_at",                        :null => false
+    t.datetime "updated_at",                        :null => false
+  end
+
+  add_index "project_statistics", ["project_id", "arch_id"], :name => "index_project_statistics_on_project_id_and_arch_id", :unique => true
+
   create_table "project_tags", :force => true do |t|
     t.integer  "project_id"
     t.string   "commit_id"
@@ -412,8 +423,6 @@ ActiveRecord::Schema.define(:version => 20130724105821) do
     t.boolean  "has_wiki",                 :default => false
     t.string   "default_branch",           :default => "master"
     t.boolean  "is_package",               :default => true,     :null => false
-    t.integer  "average_build_time",       :default => 0,        :null => false
-    t.integer  "build_count",              :default => 0,        :null => false
     t.integer  "maintainer_id"
     t.boolean  "publish_i686_into_x86_64", :default => false
     t.string   "owner_uname",                                    :null => false
diff --git a/lib/abf_worker/model_helper.rb b/lib/abf_worker/model_helper.rb
index 9d8de6653..ff9aefd9f 100644
--- a/lib/abf_worker/model_helper.rb
+++ b/lib/abf_worker/model_helper.rb
@@ -1,59 +1,70 @@
-module AbfWorker
-  module ModelHelper
-    # In model which contains this helper should be:
-    # - #abf_worker_args
-    # - #build_canceled
-
-    def abf_worker_log
-      Resque.redis.get(service_queue) || I18n.t('layout.build_lists.log.not_available')
-    end
-
-    def add_job_to_abf_worker_queue
-      Resque.push(
-        worker_queue_with_priority,
-        'class' => worker_queue_class,
-        'args' => [abf_worker_args]
-      )
-    end
-
-    def cancel_job
-      deleted = Resque::Job.destroy(
-        worker_queue_with_priority,
-        worker_queue_class,
-        abf_worker_args
-      )
-      if deleted == 1
-        build_canceled
-      else
-        send_stop_signal
-      end
-      true
-    end
-
-    def worker_queue_with_priority(queue = nil)
-      queue ||= abf_worker_base_queue
-      queue << '_' << abf_worker_priority if abf_worker_priority.present?
-      queue
-    end
-
-    def worker_queue_class(queue_class = nil)
-      queue_class ||= "AbfWorker::#{abf_worker_base_queue.classify}"
-      queue_class << abf_worker_priority.capitalize
-    end
-
-    private
-
-    def send_stop_signal
-      Resque.redis.setex(
-        "#{service_queue}::live-inspector",
-        240,    # Data will be removed from Redis after 240 sec.
-        'USR1'  # Immediately kill child but don't exit
-      )
-    end
-
-    def service_queue
-      "abfworker::#{abf_worker_base_queue.gsub(/\_/, '-')}-#{id}"
-    end
+module AbfWorker::ModelHelper
+  # In model which contains this helper should be:
+  # - #abf_worker_args
+  # - #build_canceled
 
+  def self.included(base)
+    base.extend(ClassMethods)
   end
+
+  module ClassMethods
+    def log_server
+      @log_server ||= Redis.new(
+        :host => APP_CONFIG['abf_worker']['log_server']['host'],
+        :port => APP_CONFIG['abf_worker']['log_server']['port']
+      )
+    end
+  end
+
+  def abf_worker_log
+    self.class.log_server.get(service_queue) || I18n.t('layout.build_lists.log.not_available')
+  end
+
+  def add_job_to_abf_worker_queue
+    Resque.push(
+      worker_queue_with_priority,
+      'class' => worker_queue_class,
+      'args' => [abf_worker_args]
+    )
+  end
+
+  def cancel_job
+    deleted = Resque::Job.destroy(
+      worker_queue_with_priority,
+      worker_queue_class,
+      abf_worker_args
+    )
+    if deleted == 1
+      build_canceled
+    else
+      send_stop_signal
+    end
+    true
+  end
+
+  def worker_queue_with_priority(queue = nil)
+    queue ||= abf_worker_base_queue
+    queue << '_' << abf_worker_priority if abf_worker_priority.present?
+    queue
+  end
+
+  def worker_queue_class(queue_class = nil)
+    queue_class ||= "AbfWorker::#{abf_worker_base_queue.classify}"
+    queue_class << abf_worker_priority.capitalize
+  end
+
+  private
+
+  def send_stop_signal
+    Resque.redis.setex(
+      "#{service_queue}::live-inspector",
+      240,    # Data will be removed from Redis after 240 sec.
+      'USR1'  # Immediately kill child but don't exit
+    )
+  end
+
+  def service_queue
+    "abfworker::#{abf_worker_base_queue.gsub(/\_/, '-')}-#{id}"
+  end
+
 end
\ No newline at end of file
diff --git a/spec/factories/project_statistic.rb b/spec/factories/project_statistic.rb
new file mode 100644
index 000000000..ec381ef09
--- /dev/null
+++ b/spec/factories/project_statistic.rb
@@ -0,0 +1,7 @@
+# -*- encoding : utf-8 -*-
+FactoryGirl.define do
+  factory :project_statistic do
+    association :project, :factory => :project
+    association :arch,    :factory => :arch
+  end
+end
diff --git a/spec/models/project_statistic_spec.rb b/spec/models/project_statistic_spec.rb
new file mode 100644
index 000000000..e13a0ec20
--- /dev/null
+++ b/spec/models/project_statistic_spec.rb
@@ -0,0 +1,24 @@
+require 'spec_helper'
+
+describe ProjectStatistic do
+
+  context 'ensures that validations and associations exist' do
+    it { should belong_to(:project) }
+    it { should belong_to(:arch) }
+
+    it { should validate_presence_of(:project_id) }
+    it { should validate_presence_of(:arch_id) }
+    it { should validate_presence_of(:average_build_time) }
+    it { should validate_presence_of(:build_count) }
+
+    it { should_not allow_mass_assignment_of(:project_id) }
+    it { should_not allow_mass_assignment_of(:arch_id) }
+
+    it 'uniqueness of project_id and arch_id' do
+      FactoryGirl.create(:project_statistic)
+      should validate_uniqueness_of(:project_id).scoped_to(:arch_id)
+    end
+
+  end
+
+end