Class: Benchmark::HTTP::Command::Concurrency
- Inherits:
-
Samovar::Command
- Object
- Samovar::Command
- Benchmark::HTTP::Command::Concurrency
- Defined in:
- lib/benchmark/http/command/concurrency.rb
Instance Method Summary collapse
- #call ⇒ Object
- #confidence_factor ⇒ Object
- #measure_performance(concurrency, endpoint, request_path) ⇒ Object
- #run(url) ⇒ Object
Instance Method Details
#call ⇒ Object
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# File 'lib/benchmark/http/command/concurrency.rb', line 106 def call @hosts.each do |host| run(host) end end |
#confidence_factor ⇒ Object
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# File 'lib/benchmark/http/command/concurrency.rb', line 29 def confidence_factor 1.0 - @options[:confidence] end |
#measure_performance(concurrency, endpoint, request_path) ⇒ Object
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# File 'lib/benchmark/http/command/concurrency.rb', line 33 def measure_performance(concurrency, endpoint, request_path) Console.logger.info(self, url: endpoint.url) {"I am running #{concurrency} asynchronous tasks that will each make sequential requests..."} statistics = Statistics.new(concurrency) task = Async::Task.current concurrency.times.map do task.async do client = Async::HTTP::Client.new(endpoint, protocol: endpoint.protocol) statistics.sample(confidence_factor) do response = client.get(request_path).tap(&:finish) end client.close end end.each(&:wait) Console.logger.info(self, url: endpoint.url, concurrency: concurrency, statistics: statistics) do |buffer| buffer.puts "I made #{statistics.count} requests in #{Seconds[statistics.sequential_duration]}. The per-request latency was #{Seconds[statistics.latency]}. That's #{statistics.per_second.round(2)} asynchronous requests/second." buffer.puts "\t Variance: #{Seconds[statistics.variance]}" buffer.puts "\tStandard Deviation: #{Seconds[statistics.standard_deviation]}" buffer.puts "\t Standard Error: #{statistics.standard_error}" end return statistics end |
#run(url) ⇒ Object
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# File 'lib/benchmark/http/command/concurrency.rb', line 62 def run(url) endpoint = Async::HTTP::Endpoint.parse(url) request_path = endpoint.url.request_uri Console.logger.info(self) {"I am going to benchmark #{url}..."} Sync do |task| statistics = [] minimum = @options[:minimum] base = measure_performance(minimum, endpoint, request_path) statistics << base current = minimum * 2 maximum = nil while statistics.last.concurrency < current results = measure_performance(current, endpoint, request_path) if base.similar?(results, @options[:threshold]) statistics << results minimum = current if maximum current += (maximum - current) / 2 else current *= 2 end else # current concurrency is too big, so we limit maximum to it. maximum = current current = (minimum + (maximum - minimum) / 2).floor end end Console.logger.info(self) do |buffer| buffer.puts "Your server can handle #{statistics.last.concurrency} concurrent requests." buffer.puts "At this level of concurrency, requests have ~#{(statistics.last.latency / statistics.first.latency).round(2)}x higher latency." end end end |