require 'rubygems'
require 'active_record'
require 'benchmark'
ActiveRecord::Base.establish_connection :adapter => 'sqlite3', :database => 'perf_ar.db'
# set up ActiveRecord
class ArItem < ActiveRecord::Base
set_table_name 'items'
end
# created schema and data
class NewItem < ActiveRecord::Migration
def self.up
create_table :items do |t|
t.column :name, :string
t.column :description, :text
t.column :active, :boolean
t.column :created_at, :datetime
end
end
def self.down
drop_table :items
end
end
NewItem.up
1000.times do |i|
ArItem.create(:name => "record_#{i}", :description => "test record", :active => i.remainder(3).zero?)
end
# run benchmarks
Benchmark.bmbm do |x|
x.report('active_record single-thread') do
100.times do
ArItem.find(:all, :conditions => ["active = ?", false])
end
end
x.report('active_record threaded') do
ActiveRecord::Base.allow_concurrency = true
threads = []
10.times do
t = Thread.new do
10.times do
ArItem.find(:all, :conditions => ["active = ?", false])
end
end
threads.push(t)
end
threads.each { |t| t.join }
end
end
ActiveRecord::Base.verify_active_connections!
NewItem.down
Refactorings
No refactoring yet !
Tomahx
January 7, 2011, January 07, 2011 07:24, permalink
http://mybifoldclosetdoors.com/ - bifold closet doors
INCUTSUSALL
January 10, 2011, January 10, 2011 23:32, permalink
Choosing the Best Solar Charger for Your iPhone Sourcinggate .com
Solar chargers are becoming increasingly popular for smartphone users, with the iPhone being no exception. There are a variety of solar iPhone chargers available, but the most important question is: ¡°Which one is the best solar charger iphone solar charger for me?¡± In this article I¡¯ll go over three important factors for finding the best solar charger for your iPhone.
Is the solar charger compatible?
While there are many solar chargers for iPhones, many aren¡¯t made only for the iPhone. Some solar chargers have interchangeable charging tips. So be sure to see if an iPhone charging tip is included and/or available separately.
If you have found a solar charger made specifically for the iPhone, it is a good idea to check which iPhone(s) it is compatible with. For example, the Dexim P-Flip has two models: one for iPhone 3g/3gs and the second is for the iPhone 4.
How else can it be chaged?
Having a solar iPhone charger can undoubtedly provide additional battery life at the most critical times but you might not have the time or sunlight required to charge up from the sun. The top solar iPhone chargers allow users to charge the internal battery via usb or wall outlet. This can be a great option to insure you have at least some extra power on hand.
How will the charger attach to my iPhone?
Solar chargers will either attach directly to your iPhone or via the charging cord. While this decision is made primarily by your personal preference, each solar charger does have advantages and disadvantages. On device chargers are usually smaller and resemble an iPhone case; however their battery and solar panel size is smaller than many corded solar chargers. Cable connector solar chargers have larger batteries and solar panels but carrying two separate devices can be bulky. For an in depth look at the different types of solar iphone chargers, check out this article: On Device or Cabled iPhone Solar Charger?
Solar iPhone chargers aren¡¯t for everyone but they can be a great alternative to carrying your charger everywhere you go.
GuexFexymub
April 27, 2011, April 27, 2011 11:03, permalink
Royal wedding: Will the Bishop of London be amused by wedding stunt? The Queen of Hearts will start proceedings from her royal throne at 2.30pm and there will be family entertainment with live music from Kaleidoscope Jazz Quartet and Hampshire Police Brass Band.There will also be a 60-strong choir from SingZone performing and children will be able to play on giant board games, such as Royal Croquet and Snakes and Ladders. we should pay more attention to their flower girl dress.http://www.williamsbridal.com/wedding-dresses/plus-size-wedding-dress.html The day’s entertainment is free, but staff will be collecting for The Foundation of Prince William and Prince Harry, which supports disadvantaged young people and armed forces veterans.Beautiful woman we should pay more attention to their clothes under their wedding dresses,
escoveque
September 28, 2011, September 28, 2011 21:53, permalink
R4 DSi pasteboard can be recognised as DSi new year card or R4i card. It is in unembellished event a archetype of flashcard produced during Nintendo DSi, DSiLL and DSiXL. Next to useing a R4i DSi card and MicroSD credit card, people can in a jiffy place into custody revealed veil games and multi-media functions. R4 DSi take action may be the upgrade printing of R4 DS plan, it consists of all purpose of R4 DS. Nintendo upgraded the DSi firmware to V1.4.3 in July 2011, and some R4 DSi credit rating cards are halt. even so it is happy, under R4 DSi card can resoluteness on DSi V1.4.3 straightly. http://www.r4i-gold-3ds.com/ez-flash-5-ez-5-card-4gb-microsd-transflash-card.html
http://www.r4i-gold-3ds.com/r4i-sdhc-v1-4-3-dsi-card-with-8gb-kingston-microsd-memory-card.html
first of three benchmarks, expected AR to be slowest but it was fastest - why?