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diff --git a/aoc2023/build/dev/erlang/pqueue/README.markdown b/aoc2023/build/dev/erlang/pqueue/README.markdown new file mode 100644 index 0000000..77aaf1c --- /dev/null +++ b/aoc2023/build/dev/erlang/pqueue/README.markdown @@ -0,0 +1,31 @@ +Erlang Priority Queue Implementation +==================================== + +The priority queue implementations implement a subset of the stdlib Erlang queue interface as seen in the implementation used by both [Riak and RabbitMQ](https://github.com/basho/riak_core/blob/master/src/riak_core_priority_queue.erl). + +The implementations: + +* `priority_queue` (fastest for any priorities when only using a single priority at a time) +* `pqueue` (fastest for 41 priorities, -20 (high) to 20 (low), when using 2 or more priorities at the same time) +* `pqueue2` (slower heap implementation) +* `pqueue3` (faster than `pqueue2` and `priority_queue` when using 64 or more priorities at the same time) +* `pqueue4` (slightly slower than `pqueue` but fastest for allowing 257 priorities, -128 (high) to 128 (low), i.e., fastest when using 42 or more priorities at the same time) + +[The latest results are here](http://okeuday.livejournal.com/19539.html), with [the benchmark here](http://github.com/okeuday/erlbench). + +Author +------ + +Michael Truog (mjtruog at protonmail dot com) + +Thanks +------ + +* Jesper Louis andersen (PropEr integration and testing) +* Ulf Wiger (suggestions and insight) + +License +------- + +MIT License + |