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refactored and optimized rendering

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Measures:
1) A while loop is faster than iterating with #each.
2) Check string, variable and block tokens first. They are far more
   frequent than interrupt tokens. In their case, checking for an
   interrupt can be avoided.
3) String tokens just map to themselves and don't need the special
   treatment of BlockBody#render_node (except the resource limit
   check).

Benchmark
=========

$ bundle exec rake benchmark:run

Before
------

Run 1)
              parse:     41.630  (± 0.0%) i/s -    420.000  in  10.089309s
             render:     75.962  (± 3.9%) i/s -    763.000  in  10.066823s
     parse & render:     25.497  (± 0.0%) i/s -    256.000  in  10.040862s

Run 2)
              parse:     42.130  (± 0.0%) i/s -    424.000  in  10.064738s
             render:     77.003  (± 1.3%) i/s -    777.000  in  10.093524s
     parse & render:     25.739  (± 0.0%) i/s -    258.000  in  10.024581s

Run 3)
              parse:     41.976  (± 2.4%) i/s -    420.000  in  10.021406s
             render:     76.184  (± 1.3%) i/s -    763.000  in  10.018104s
     parse & render:     25.641  (± 0.0%) i/s -    258.000  in  10.062549s

After
-----

Run 1)
              parse:     42.283  (± 0.0%) i/s -    424.000  in  10.028306s
             render:     83.158  (± 2.4%) i/s -    832.000  in  10.009201s
     parse & render:     26.417  (± 0.0%) i/s -    266.000  in  10.069718s

Run 2)
              parse:     41.159  (± 4.9%) i/s -    412.000  in  10.031297s
             render:     81.591  (± 3.7%) i/s -    816.000  in  10.018225s
     parse & render:     25.924  (± 3.9%) i/s -    260.000  in  10.035653s

Run 3)
              parse:     42.418  (± 2.4%) i/s -    424.000  in  10.003100s
             render:     84.183  (± 2.4%) i/s -    847.000  in  10.069781s
     parse & render:     26.726  (± 0.0%) i/s -    268.000  in  10.029857s
This commit is contained in:
Christopher Aue
2018-04-19 12:10:15 +02:00
parent 4369fe6c85
commit c086017bc9
2 changed files with 37 additions and 33 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/liquid/profiler/hooks.rb
+4 -4
View File
@@ -1,13 +1,13 @@
module Liquid
class BlockBody
def render_node_with_profiling(node, context)
def render_node_with_profiling(node, output, context, skip_output = false)
Profiler.profile_node_render(node) do
render_node_without_profiling(node, context)
render_node_without_profiling(node, output, context, skip_output)
end
end
alias_method :render_node_without_profiling, :render_node
alias_method :render_node, :render_node_with_profiling
alias_method :render_node_without_profiling, :render_node_to_output
alias_method :render_node_to_output, :render_node_with_profiling
end
class Include < Tag