messagepack vs yajl

gistfile1.txt

11:34 ~ $ irb
1.9.2p290 :001 > require 'rubygems'
 => false 
1.9.2p290 :002 > require 'json'
 => true 
1.9.2p290 :003 > require 'msgpack'
 => true 
1.9.2p290 :004 > f = File.read('test.json'); nil # f is our calendar data
 => nil 
1.9.2p290 :005 > h = JSON.parse(f); nil
 => nil 
1.9.2p290 :007 > m = MessagePack.pack(h); nil
 => nil 
1.9.2p290 :009 > require 'yajl'
 => true 

# Time in millseconds to decode each
1.9.2p290 :010 > a = Time.now; h = Yajl::Parser.new.parse(f); nil; (Time.now-a)*1000
 => 144.823 
1.9.2p290 :011 > a = Time.now; h = MessagePack.unpack(m); nil; (Time.now-a)*1000
 => 53.449000000000005 


# Smaller uncompressed
1.9.2p290 :012 > m.size
 => 2351616 
1.9.2p290 :013 > f.size
 => 4542940 

# Smaller compressed
1.9.2p290 :016 > ActiveSupport::Gzip.compress(m).size
 => 135666 
1.9.2p290 :017 > ActiveSupport::Gzip.compress(f).size
 => 165177