gistfile1.txt

BEFORE 

---
categories_admin:
  50: 106
  75: 112
  90: 143
  99: 205
home_admin:
  50: 64
  75: 65
  90: 67
  99: 131
topic_admin:
  50: 23
  75: 24
  90: 25
  99: 98
categories:
  50: 87
  75: 89
  90: 150
  99: 168
home:
  50: 51
  75: 52
  90: 53
  99: 128
topic:
  50: 14
  75: 15
  90: 15
  99: 36
timings:
  load_rails: 3104
ruby-version: 2.2.0-p-1
rss_kb: 248444
pss_kb: 244659
architecture: amd64
operatingsystem: Ubuntu
kernelversion: 3.8.0
memorysize: 23.55 GB
physicalprocessorcount: 1
processor0: Intel(R) Core(TM) i7 CPU         960  @ 3.20GHz
virtual: physical

gistfile2.txt

RUBY_GC_HEAP_OLDOBJECT_LIMIT_FACTOR=1.5 ruby script/bench.rb

---
categories_admin:
  50: 107
  75: 111
  90: 116
  99: 201
home_admin:
  50: 67
  75: 69
  90: 73
  99: 107
topic_admin:
  50: 24
  75: 25
  90: 26
  99: 35
categories:
  50: 90
  75: 94
  90: 100
  99: 197
home:
  50: 55
  75: 56
  90: 66
  99: 106
topic:
  50: 14
  75: 15
  90: 15
  99: 44
timings:
  load_rails: 3053
ruby-version: 2.2.0-p-1
rss_kb: 197572
pss_kb: 193786
architecture: amd64
operatingsystem: Ubuntu
kernelversion: 3.8.0
memorysize: 23.55 GB
physicalprocessorcount: 1
processor0: Intel(R) Core(TM) i7 CPU         960  @ 3.20GHz
virtual: physical