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gh-132657: Add free-threading scaling benchmark for copy.copy and copy.deepcopy #132658

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gh-132657: Add free-threading scaling benchmark for copy.copy and copy.deepcopy #132658

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b2fb5ec
Add free-threading scaling bm
eendebakpt Apr 17, 2025
430cb5c
Apply suggestions from code review
eendebakpt Apr 21, 2025
677f126
Merge branch 'main' into ftscaling_copy
eendebakpt Aug 30, 2025
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17 changes: 16 additions & 1 deletion Tools/ftscalingbench/ftscalingbench.py
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,7 @@
import sys
import threading
import time
import copy

# The iterations in individual benchmarks are scaled by this factor.
WORK_SCALE = 100
Expand All @@ -37,11 +38,25 @@
in_queues = []
out_queues = []


def register_benchmark(func):
ALL_BENCHMARKS[func.__name__] = func
return func


@register_benchmark
def shallow_copy():
x = [1, 2, 3]
shallow_copy = copy.copy
for i in range(200 * WORK_SCALE):
shallow_copy(x)

@register_benchmark
def deepcopy():
x = {'list': [1, 2], 'tuple': (1, None)}
deepcopy = copy.deepcopy
for i in range(40 * WORK_SCALE):
deepcopy(x)

@register_benchmark
def object_cfunction():
accu = 0
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