rubyXL_excel_file_20_columns_and_60000_rows.rb

# frozen_string_literal: true

require 'rubyXL' # https://github.com/weshatheleopard/rubyXL

rows = 60_000
columns = 20

workbook = RubyXL::Workbook.new
worksheet = workbook.worksheets[0]
worksheet.sheet_name = 'Test'

rows.times do |row|
  columns.times do |column|
    worksheet.insert_cell(row, column, 'test data')
  end
end

workbook.write('test_rubyxl.xlsx')

# 2.8 GHz Intel Core i7
# 16 GB 1600 MHz DDR3

# PID    COMMAND          %CPU  MEM
# 0      kernel_task      2.6   1560M+
# 70742  ruby             99.0  1547M-
# 51971  com.apple.WebKit 0.0   270M
# Processes: 353 total, 2 running, 351 sleeping, 1515 threads