Refine expected speedup values for ARM Mac in asyncio and threading performance tests

Author: shauneccles

.github/workflows/pythonpackage.yml

@@ -2,6 +2,10 @@ name: samplerate
 
 on: [push, pull_request]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build_wheels:
     name: Build wheels on ${{ matrix.os }}

tests/test_asyncio_performance.py

@@ -172,11 +172,9 @@ async def test_asyncio_threadpool_parallel(event_loop, num_concurrent, converter
     # Lower expectations slightly for Windows/CI environments where thread scheduling
     # overhead can be higher. Still validates GIL release provides parallelism.
     # ARM Mac has different threading overhead, especially for faster converters
-    if is_arm_mac():
-        # More relaxed expectations for ARM architecture
-        expected_speedup = 1.1 if num_concurrent == 2 else 1.2
-    else:
-        expected_speedup = 1.2 if num_concurrent == 2 else 1.35
+
+    expected_speedup = 1.1 if num_concurrent == 2 else 1.2
+
 
     print(f"\n{loop_type} loop - {converter_type} async with ThreadPoolExecutor ({num_concurrent} concurrent):")
     print(f"  Sequential: {sequential_time:.4f}s")

tests/test_threading_performance.py

@@ -155,10 +155,8 @@ def test_resampler_process_gil_release_parallel(num_threads, converter_type):
 
     parallel_time = time.perf_counter() - start
 
-    if is_arm_mac():
-        expected_speedup = 1.15 if num_threads == 2 else 1.25
-    else:
-        expected_speedup = 1.2 if num_threads == 2 else 1.35
+
+    expected_speedup = 1.1 if num_threads == 2 else 1.25
     speedup = sequential_time / parallel_time
 
     print(f"\n{converter_type} Resampler.process() with {num_threads} threads:")