hashtest.cr

# results:
# doing 100000000 records
# set: 24.3293866 -- ( 4110255 per second)
# `ps -p #{Process.pid} -o rss` # => "  RSS\n9547028\n"
# 99999999
# get: 0.4833987 -- ( 206868574 per second )


a = {} of Int32 => String
num = 100_000_000
puts "doing #{num} records"

start = Time.now
1.upto(num) do |x|
  a[x] = x.to_s
end
diff = (Time.now - start).total_seconds
puts "set: #{diff} -- ( #{(num/diff).to_i} per second)"

# how much memory we using
pp `ps -p #{Process.pid} -o rss`

start = Time.now
match = num - 1
1.upto(num) do |x|
  b = a[x]
  # put second to last one just to make sure...
  if x  == match
     puts b
   end  
end
diff = (Time.now - start).total_seconds
puts "get: #{diff} -- ( #{(num/diff).to_i} per second )"