dodb.cr/spec/benchmark-fifo.cr

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require "benchmark"
require "./utilities.cr"
require "../src/fifo.cr"
def add(fifo : FIFO(Int32) | EfficientFIFO(Int32), nb : UInt32)
i = 0
while i < nb
fifo << i
i += 1
end
end
def report_add(fifo : FIFO(Int32) | EfficientFIFO(Int32), nb : UInt32, fname : String)
File.open("#{Context.report_dir}/#{fname}.raw", "w") do |file|
i = 0
while i < nb
elapsed_time = perform_something { fifo << i }
i += 1
file.puts "#{i} #{elapsed_time.total_nanoseconds}"
end
end
end
class Context
class_property nb_values : UInt32 = 100_000
class_property fifo_size : UInt32 = 10_000
class_property report_dir = "results"
end
if nb_values = ENV["NBVAL"]?
Context.nb_values = nb_values.to_u32
end
if fifo_size = ENV["FIFOSIZE"]?
Context.fifo_size = fifo_size.to_u32
end
if ARGV.size > 0
puts "Usage: benchmark-fifo"
puts ""
puts "envvar: REPORT_DIR=<directory> where to put the results"
puts "envvar: REPORT_EACH_ADD=<any> to report the duration of each addition of a value in the structure"
puts "envvar: NBVAL=<nb> (default: 100_000) nb of values to add to the structure"
puts "envvar: FIFOSIZE=<nb> (default: 10_000) max number of values in the structure"
exit 0
end
ENV["REPORT_DIR"]?.try { |report_dir| Context.report_dir = report_dir }
Dir.mkdir_p Context.report_dir
if ENV["REPORT_EACH_ADD"]?
FIFO(Int32).new(Context.fifo_size).tap do |fifo|
report_add fifo, Context.nb_values, "fifo_#{Context.fifo_size}_#{Context.nb_values}"
end
EfficientFIFO(Int32).new(Context.fifo_size).tap do |fifo|
report_add fifo, Context.nb_values, "efficientfifo_#{Context.fifo_size}_#{Context.nb_values}"
end
else
Benchmark.ips do |x|
x.report("adding #{Context.nb_values} values, FIFO limited to #{Context.fifo_size}") do
fifo = FIFO(Int32).new Context.fifo_size
add fifo, Context.nb_values
end
x.report("adding #{Context.nb_values} values, EfficientFIFO limited to #{Context.fifo_size}") do
fifo = EfficientFIFO(Int32).new Context.fifo_size
add fifo, Context.nb_values
end
end
end