rails rendering analysis

log.txt

$ time { render "haml" }
  Rendered _haml.html.haml (0.5ms)
----> 1.51 ms

$ time { render "erb" }
  Rendered _erb.html.erb (0.4ms)
----> 1.78 ms

# using hamlit
# there is little difference in rendering erb & haml

$ time { render text: content_tag(:li, link_to(t(:sign_up), signin_path)) }
  Rendered text template (0.0ms)
----> 0.54 ms

# >>>
# the partial file lookup is MUCH slower than the actual template rendering

$ xx = content_tag(:li, link_to(t(:sign_up), signin_path))
"<li><a href=\"/signin\">Sign up</a></li>"
$ time { render text: xx }
  Rendered text template (0.0ms)
----> 0.38 ms

$ time { render text: xx }
  Rendered text template (0.0ms)
----> 0.25 ms

$ time { render text: content_tag(:li, "<a href='/signin'>Sign up</a>") }
  Rendered text template (0.0ms)
----> 0.28 ms

$ time { render text: ("<li><a href='/signin'>Sign up</a></li>") }
  Rendered text template (0.0ms)
----> 0.19 ms

# render: 0.2 ms
# content_tag / link_to: 0.1 ms
# template file lookup: 1.0 ms
# haml / erb rendering: 0.2 ms