benchmark.rb

require 'json-schema'
require 'benchmark'

schema = YAML.load_file(File.open("rule.yml")).freeze
validator = JSON::Validator.new(schema)

body = ....

Benchmark.bm do |x|
  x.report("before 100") { 100.times { JSON::Validator.validate(schema, data) } }
  x.report("before 1000") { 1000.times { JSON::Validator.validate(schema, data) } }
  x.report("before 5000") { 5000.times { JSON::Validator.validate(schema, data) } }

  x.report("after 100") { 100.times { validator.validate(data) } }
  x.report("after 1000") { 1000.times { validator.validate(data) } }
  x.report("after 5000") { 5000.times { validator.validate(data) } }
end

json_schema_test.rb

require 'json-schema'
require 'stackprof'

body = ....

schema = YAML.load_file(File.open("rule.yml")).freeze
StackProf.run(mode: :cpu, out: 'stackprof.dump', raw: true) do
  100.times { JSON::Validator.validate(schema, body) }
end