GeezerVison is showing github.com — gh-129813, PEP 782: Use PyBytesWriter in ssl.MemoryBIO by vstinner · Pull Request #139113 · python/cpython
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vstinner
commented
Sep 18, 2025
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edited by bedevere-app
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Replace PyBytes_FromStringAndSize(NULL, size) and _PyBytes_Resize() with the new public PyBytesWriter API.
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Replace PyBytes_FromStringAndSize(NULL, size) and _PyBytes_Resize()
with the new public PyBytesWriter API.
|
Benchmark:
import ssl
import pyperf
bio = ssl.MemoryBIO()
def bench(size):
bio.write(b'x' * size)
data = bio.read(size)
if len(data) != size:
raise Exception
runner = pyperf.Runner()
for size in (1, 10, 100, 1_000, 10_000):
runner.bench_func(f'read {size:,}B', bench, size)Result:
| Benchmark |
ref |
pep782 |
| read 1B |
267 ns |
239 ns: 1.12x faster |
| read 10B |
281 ns |
276 ns: 1.02x faster |
| read 100B |
276 ns |
286 ns: 1.04x slower |
| read 1,000B |
380 ns |
374 ns: 1.02x faster |
| Geometric mean |
(ref) |
1.02x faster |
Benchmark hidden because not significant (1): read 10,000B
|
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gpshead
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picnixz
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