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authorAaron Patterson <aaron.patterson@gmail.com>2015-08-18 15:57:11 -0700
committerAaron Patterson <aaron.patterson@gmail.com>2015-08-18 15:57:11 -0700
commitd993cb362969caa2cb3b3f2f86ddf653d34dfb1b (patch)
treed0323e630d3308b7852441d4e80b9a944054f41b /activesupport/test/file_fixtures
parent4d9475bef91d1df675750aabc13de23c6eff9e92 (diff)
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drop array allocations when building paths
```ruby require 'action_pack' require 'action_dispatch' require 'benchmark/ips' route_set = ActionDispatch::Routing::RouteSet.new routes = ActionDispatch::Routing::Mapper.new route_set ObjectSpace::AllocationTracer.setup(%i{path line type}) result = ObjectSpace::AllocationTracer.trace do 500.times do routes.resources :foo end end sorted = ObjectSpace::AllocationTracer.allocated_count_table.sort_by(&:last) sorted.each do |k,v| next if v == 0 p k => v end __END__ Before: {:T_SYMBOL=>11} {:T_REGEXP=>17} {:T_STRUCT=>6500} {:T_MATCH=>12004} {:T_OBJECT=>99009} {:T_DATA=>100088} {:T_HASH=>122015} {:T_STRING=>159637} {:T_IMEMO=>363134} {:T_ARRAY=>433056} After: {:T_SYMBOL=>11} {:T_REGEXP=>17} {:T_STRUCT=>6500} {:T_MATCH=>12004} {:T_OBJECT=>91009} {:T_DATA=>100088} {:T_HASH=>114013} {:T_STRING=>159637} {:T_ARRAY=>321056} {:T_IMEMO=>351133} ```
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