task-2

.dockerignore

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+node_modules
+npm-debug.log
+Dockerfile*
+docker-compose*
+.dockerignore
+.git
+.gitignore
+.env
+*/bin
+*/obj
+README.md
+LICENSE
+.vscode

.gitignore

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+*.gem
+*.rbc
+/.config
+/coverage/
+/InstalledFiles
+/pkg/
+/spec/reports/
+/spec/examples.txt
+/test/tmp/
+/test/version_tmp/
+/tmp/
+
+# Used by dotenv library to load environment variables.
+# .env
+
+# Ignore Byebug command history file.
+.byebug_history
+
+## Specific to RubyMotion:
+.dat*
+.repl_history
+build/
+*.bridgesupport
+build-iPhoneOS/
+build-iPhoneSimulator/
+
+## Specific to RubyMotion (use of CocoaPods):
+#
+# We recommend against adding the Pods directory to your .gitignore. However
+# you should judge for yourself, the pros and cons are mentioned at:
+# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
+#
+# vendor/Pods/
+
+## Documentation cache and generated files:
+/.yardoc/
+/_yardoc/
+/doc/
+/rdoc/
+
+## Environment normalization:
+/.bundle/
+/vendor/bundle
+/lib/bundler/man/
+
+# for a library or gem, you might want to ignore these files since the code is
+# intended to run in multiple environments; otherwise, check them in:
+# Gemfile.lock
+# .ruby-version
+# .ruby-gemset
+
+# unless supporting rvm < 1.11.0 or doing something fancy, ignore this:
+.rvmrc
+/.DS_Store
+.ruby-version
+/tmp

Dockerfile

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+FROM ruby:2.6
+
+LABEL Name=ruby-optimization Version=0.0.1
+
+WORKDIR /app
+COPY . /app
+
+RUN apt-get update && apt-get upgrade -y \
+  && apt-get install -y g++ valgrind \
+  massif-visualizer --no-install-recommends \
+  && apt-get purge --auto-remove -y curl \
+	&& rm -rf /var/lib/apt/lists/* \
+  && rm -rf /src/*.deb
+
+RUN gem install pry && gem install oj
+
+RUN groupadd -r massif && useradd -r -g massif massif \
+  && chown -R massif:massif /app
+
+USER massif
+
+ENTRYPOINT [ "/app/docker-entrypoint.sh" ]

asymtotics.rb

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+require './task-2'
+# gem install benchmark-ips
+# gem install kalibera
+require 'benchmark/ips'
+
+GC.disable
+
+def cpu_benchmark
+  Benchmark.ips do |bench|
+    bench.warmup = 0
+    %w[0065 0125 025 05 1 2].each do |size|
+      bench.report("Process #{size}Mb") { work("data/data_large.#{size}.txt") }
+    end
+
+    bench.compare!
+  end
+end
+
+def memory_allocation
+  %w[0065 0125 025 05 1].each do |size|
+    before = `ps -o rss= -p #{Process.pid}`.to_i / 1024
+    work("data/data_large.#{size}.txt")
+    after = `ps -o rss= -p #{Process.pid}`.to_i / 1024
+    puts "Total memory for date_large.#{size}.txt: #{after - before} MB"
+  end
+end
+
+memory_allocation
+cpu_benchmark