you can run benchmarks in the example folder:
➜ erlang-python git:(main) ✗ escript examples/bench_channel_async.erl
========================================
Channel Benchmark: Sync vs Async
========================================
System Information:
Erlang/OTP: 28
Python: 3.9.6 (default, Dec 2 2025, 07:27:58)
[Clang 17.0.0 (clang-1700.6.3.2)]
Python channel helpers ready.
--- Sync Channel Benchmark ---
(Erlang send + NIF try_receive - pure Erlang)
Size | Throughput | Avg (us)
--------------------------------------
64 | 10416667 | 0.10
1024 | 6180470 | 0.16
16384 | 833472 | 1.20
--- Async Task API Benchmark ---
(py_event_loop:create_task + await using stdlib)
Operation | Throughput | Avg (us)
--------------------------------------------
math.sqrt | 101174 | 9.88
concurrent | 374111 | 2.67
--- Sync vs Async Comparison ---
(Channel operations: NIF sync vs py:call)
Message size: 1024 bytes, Iterations: 1000
Method | Time (ms) | Throughput
---------------------------------------------
NIF sync | 0.20 | 5102041
py:call sync | 4.38 | 228154
async task | 8.10 | 123426
spawn batch | 3.38 | 295508
NIF sync is 22.4x faster than py:call
NIF sync is 41.3x faster than async task
Spawn batch is 2.4x faster than sequential async
========================================
Benchmark Complete
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It’s used in a coming product and you can find it used in barrel_embed and some other products like hornbeam. recently I only merged and fixed . I’m pushing version when i introduce breaking change, also. The moment I start to use it for supported products it becomes 1.0.
