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Formatters no longer have an output/1 method, instead use Formatter.output/3 please
Usage of formatter_options is deprecated, instead please use the new tuple way
Features (User Facing)
benchee now uses the maximum precision available to measure which on Linux and OSX is nanoseonds instead of microseconds. Somewhat surprisingly :timer.tc/1 always cut down to microseconds although better precision is available.
The preferred way to specify formatters and their options is to specify them as a tuple {module, options} instead of using formatter_options.
New Formatter.output/1 function that takes a suite and uses all configured formatters to output their results
Add the concept of a benchmarking title that formatters can pick up
the displayed percentiles can now be adjusted
inputs option can now be an ordered list of tuples, this way you can determine their order
support FreeBSD properly (system metrics) - thanks @kimshrier
Bugfixes (User Facing)
Remove extra double quotes in operating system report line - thanks @kimshrier
Breaking Changes (Plugins)
all reported times are now in nanoseconds instead of microseconds
formatter methods format and write now take 2 arguments each where the additional arguments is the options specified for this formatter so that you have direct access to it without peeling it from the suite
You can no longer use Benchee.Formatter - just adopt the behaviour (no more auto generated output/1 method, but Formatter.output/3 takes that responsibility now)
Features (Plugins)
An optional title is now available in the suite for you to display
Scenarios are now sorted already sorted (first by run time, then memory usage) - no need to sort them yourself!
Add Scenario.data_processed?/2 to check if either run time or memory data has had statistics generated