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benchmark/driver.rb: add CPU time measurement targets

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"Real" time is too unstable on my systems, hopefully counting
only CPU time can gain more reliable benchmark results.

[ruby-core:87362] [Feature #14815]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63564 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
normal 2018-06-03 21:06:26 +00:00
parent ce7c531cbf
commit c27a8e87a9
1 changed files with 9 additions and 3 deletions
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12
benchmark/driver.rb
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@ -209,6 +209,11 @@ class BenchmarkDriver
output({ output({
real: "Execution time (sec)", real: "Execution time (sec)",
utime: "user CPU time",
stime: "system CPU time",
cutime: "user CPU time of children",
cstime: "system CPU time of children",
total: "all CPU time",
peak: "Memory usage (peak) (B)", peak: "Memory usage (peak) (B)",
size: "Memory usage (last size) (B)", size: "Memory usage (last size) (B)",
}[@measure_target]) }[@measure_target])
@ -332,12 +337,12 @@ class BenchmarkDriver
def measure executable, file def measure executable, file
case @measure_target case @measure_target
when :real when :real, :utime, :stime, :cutime, :cstime, :total
cmd = "#{executable} #{@ruby_arg} #{file}" cmd = "#{executable} #{@ruby_arg} #{file}"
m = Benchmark.measure{ m = Benchmark.measure{
system(cmd, out: File::NULL) system(cmd, out: File::NULL)
} }
result = m.real result = m.__send__(@measure_target)
when :peak, :size when :peak, :size
tmp = Tempfile.new("benchmark-memory-wrapper-data") tmp = Tempfile.new("benchmark-memory-wrapper-data")
wrapper = "#{File.join(__dir__, 'memory_wrapper.rb')} #{tmp.path} #{@measure_target}" wrapper = "#{File.join(__dir__, 'memory_wrapper.rb')} #{tmp.path} #{@measure_target}"
@ -405,7 +410,8 @@ if __FILE__ == $0
o.on('--ruby-arg [ARG]', "Optional argument for ruby"){|a| o.on('--ruby-arg [ARG]', "Optional argument for ruby"){|a|
opt[:ruby_arg] = a opt[:ruby_arg] = a
} }
o.on('--measure-target [TARGET]', 'real (execution time), peak, size (memory)'){|mt| o.on('--measure-target [TARGET]',
'real (execution time), peak, size (memory), total'){|mt|
opt[:measure_target] = mt.to_sym opt[:measure_target] = mt.to_sym
} }
o.on('--rawdata-output [FILE]', 'output rawdata'){|r| o.on('--rawdata-output [FILE]', 'output rawdata'){|r|