Language Performance Comparison

Purpose

Understand the performance differences between several languages, and illustrate symantic differences between the languages.

Languages being compared:

1. C#
2. Rust
3. PureScript
4. Haskell
5. Elixir

Performance Comparison

• 1.2M Accounts
• 10M Transactions

Machine	C#	Rust	PureScript	Haskell	Elixir
Alfredo	42s	18s	378s	156s	185s
Dave	49s	20s	334s	184s	322s
Relative (Apprx.)	1	½	8	3.5	5
(Memory)	4 GB	1.6 GB	x	12 GB	3 GB

Potential Next Steps

To run a dockerized version of these tests

./docker-build-test-images.sh
./docker-test-runner.sh

On linux it looks like atop might be a good tool

• https://haydenjames.io/use-atop-linux-server-performance-analysis/
• https://www.atoptool.nl/

C#

• Pros
  • Performance without optimization
• Cons
  • Large holes in logic - potential failure points
• Code
• Running: dotnet build; time dotnet run

Rust

• Pros
  • Correctness
  • Tool ecosystem
• Cons
  • Borrow checker / need to understand memory layout
  • Lack of libraries
• Code
• Running: cargo build --release; time cargo run --release

PureScript

• Pros
  • Correctness
• Cons
  • Performance concerns on large datasets (not because of Node)
• Code
• Running: `pulp build; time node -e "require('output/Main').main()"

Haskell

• Do Account\Transaction problem
• Look at record syntax
• What kind of speed to we get?
• Code
• Running: stack build --fast; time stack run

Elixir

• Pros
  • Concurrent
  • Fault-tolerant
  • Clusteable
• Cons
  • Dynamic
  • Static types (Dyalizer) are an optional add-on
• Code
• Running: mix deps.get; mix clean; MIX_ENV=prod mix release;mv _build/prod/rel/test_elixir . ; ./test_elixir/bin/test_elixir foreground