gistfile1.txt

before disabiling the GC during the request
  Rendered posts/_post_header.html.haml (2.7ms)
  Rendered posts/_post_header.html.haml (3.7ms)
  Rendered posts/_post_header.html.haml (2.5ms)
  Rendered posts/_post_header.html.haml (2.6ms)
  Rendered posts/_post_header.html.haml (3.7ms)
  Rendered posts/_post_header.html.haml (9.6ms)
  Rendered posts/_post_header.html.haml (269.5ms)
  Rendered posts/_post_header.html.haml (2.1ms)

After
  Rendered posts/_post_header.html.haml (3.7ms)
  Rendered posts/_post_header.html.haml (3.1ms)
  Rendered posts/_post_header.html.haml (3.3ms)
  Rendered posts/_post_header.html.haml (3.4ms)
  Rendered posts/_post_header.html.haml (3.7ms)
  Rendered posts/_post_header.html.haml (3.4ms)
  Rendered posts/_post_header.html.haml (3.8ms)
  Rendered posts/_post_header.html.haml (2.4ms)