BencheeCSV

Formatter for benchee to turn the statistics output into a CSV file. This can then be used in the Spreadsheet tool of your choice to generate graphs to your liking.

These might then look like this one (quickly generated with LibreOffice from the output of the sample):

sample graphs

Installation

Add benchee_csv to your list of dependencies in mix.exs:

def deps do
  [{:benchee_csv, "~> 0.1"}]
end

Afterwards, run mix deps.get to install it.

Usage

For now use the more verbose API of Benchee and when it comes to formatting just use Benchee.Formatters.CSV.format and then write it to a file. Here is an example:

file = File.open!("test.csv", [:write])
list = Enum.to_list(1..10_000)
map_fun = fn(i) -> [i, i * i] end

Benchee.init
|> Benchee.benchmark("flat_map", fn -> Enum.flat_map(list, map_fun) end)
|> Benchee.benchmark("map.flatten",
                     fn -> list |> Enum.map(map_fun) |> List.flatten end)
|> Benchee.statistics
|> Benchee.Formatters.CSV.format
|> Enum.each(fn(row) -> IO.write(file, row) end)