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Merge pull request #3437 from DataDog/tonycthsu/merge-master-into-20
Merge master(v1.20.0) into 2.0
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| Original file line number | Diff line number | Diff line change |
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| # Used to quickly run benchmark under RSpec as part of the usual test suite, to validate it didn't bitrot | ||
| VALIDATE_BENCHMARK_MODE = ENV['VALIDATE_BENCHMARK'] == 'true' | ||
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| return unless __FILE__ == $PROGRAM_NAME || VALIDATE_BENCHMARK_MODE | ||
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| require 'benchmark/ips' | ||
| require 'ddtrace' | ||
| require 'pry' | ||
| require_relative 'dogstatsd_reporter' | ||
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| require 'libdatadog' | ||
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| puts "Libdatadog from: #{Libdatadog.pkgconfig_folder}" | ||
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| # This benchmark measures the performance of sampling + serializing profiles. It enables us to evaluate changes to | ||
| # the profiler and/or libdatadog that may impact both individual samples, as well as samples over time (e.g. timeline). | ||
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| class ProfilerSampleSerializeBenchmark | ||
| # This is needed because we're directly invoking the collector through a testing interface; in normal | ||
| # use a profiler thread is automatically used. | ||
| PROFILER_OVERHEAD_STACK_THREAD = Thread.new { sleep } | ||
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| def create_profiler | ||
| timeline_enabled = ENV['TIMELINE'] == 'true' | ||
| @recorder = Datadog::Profiling::StackRecorder.new( | ||
| cpu_time_enabled: true, | ||
| alloc_samples_enabled: false, | ||
| heap_samples_enabled: false, | ||
| heap_size_enabled: false, | ||
| heap_sample_every: 1, | ||
| timeline_enabled: timeline_enabled, | ||
| ) | ||
| @collector = Datadog::Profiling::Collectors::ThreadContext.new( | ||
| recorder: @recorder, max_frames: 400, tracer: nil, endpoint_collection_enabled: false, timeline_enabled: timeline_enabled | ||
| ) | ||
| end | ||
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| def run_benchmark | ||
| Benchmark.ips do |x| | ||
| benchmark_time = VALIDATE_BENCHMARK_MODE ? { time: 0.01, warmup: 0 } : { time: 10, warmup: 2 } | ||
| x.config( | ||
| **benchmark_time, | ||
| suite: report_to_dogstatsd_if_enabled_via_environment_variable(benchmark_name: 'profiler_sample_serialize') | ||
| ) | ||
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| x.report("sample #{ENV['CONFIG']} timeline=#{ENV['TIMELINE'] == 'true'}") do | ||
| samples_per_second = 100 | ||
| simulate_seconds = 60 | ||
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| (samples_per_second * simulate_seconds).times do | ||
| Datadog::Profiling::Collectors::ThreadContext::Testing._native_sample(@collector, PROFILER_OVERHEAD_STACK_THREAD) | ||
| end | ||
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| @recorder.serialize | ||
| nil | ||
| end | ||
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| x.save! 'profiler_sample_serialize-results.json' unless VALIDATE_BENCHMARK_MODE | ||
| x.compare! | ||
| end | ||
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| @recorder.serialize | ||
| end | ||
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| def run_forever | ||
| while true | ||
| 1000.times do | ||
| Datadog::Profiling::Collectors::ThreadContext::Testing._native_sample(@collector, PROFILER_OVERHEAD_STACK_THREAD) | ||
| end | ||
| @recorder.serialize | ||
| print '.' | ||
| end | ||
| end | ||
| end | ||
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| puts "Current pid is #{Process.pid}" | ||
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| ProfilerSampleSerializeBenchmark.new.instance_exec do | ||
| create_profiler | ||
| 10.times { Thread.new { sleep } } | ||
| if ARGV.include?('--forever') | ||
| run_forever | ||
| else | ||
| run_benchmark | ||
| end | ||
| end |
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