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dart-sdk/benchmarks/SoundSplayTreeSieve/dart2/README.md
Jonas Termansen 6f66f82625 [benchmark] Fork benchmarks for null safety and pin internal ones. 
This change forks the benchmarks for the null safety feature where there
now is a null safe version at benchmarks/Foo/dart and a legacy Dart 2
version at benchmarks/Foo/dart2. This change allows benchmarks to be
migrated per go/dart-nnbd-benchmark-migration.

Additionally this change pins the internal benchmarks which have been
moved into their own repository and is now versioned along with the Dart
SDK.

The dart2 implementation will be benchmarked instead of the null safe
dart implementation as of this change. The null safe dart implementation
will be used when null safe benchmarking is turned on.

Change-Id: If039fd7100c960169f4161c1d98167aca0af2ded
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/148440
Reviewed-by: Alexander Thomas <athom@google.com>
2020-06-02 12:53:24 +00:00

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SoundSplayTreeSieve

The SoundSplayTreeSieve benchmark reports the runtime of the sieve9 Golem benchmark for a SplayTreeSet from dart:collection and a SoundSplayTreeSet that declares variance modifiers for its type parameters.

Running the benchmark

These are instructions for running the benchmark, assuming you are in the sdk directory.

These benchmarks print a result similar to this (with varying runtimes):

CollectionSieves-SplayTreeSet-removeLoop(RunTime): 4307.52688172043 us.
CollectionSieves-SoundSplayTreeSet-removeLoop(RunTime): 4344.902386117137 us.

Dart2JS

$ sdk/bin/dart2js_developer benchmarks/SoundSplayTreeSieve/dart/SoundSplayTreeSieve.dart --enable-experiment=variance --experiment-new-rti --out=soundsplay_d2js.js
$ third_party/d8/linux/d8 soundsplay_d2js.js

Dart2JS (Omit implicit checks)

$ sdk/bin/dart2js_developer benchmarks/SoundSplayTreeSieve/dart/SoundSplayTreeSieve.dart --enable-experiment=variance --experiment-new-rti --omit-implicit-checks --out=soundsplay_d2js_omit.js --lax-runtime-type-to-string
$ third_party/d8/linux/d8 soundsplay_d2js_omit.js

DDK

$ pkg/dev_compiler/tool/ddb -d -r chrome --enable-experiment=variance -k benchmarks/SoundSplayTreeSieve/dart/SoundSplayTreeSieve.dart