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The speed of asyncio UDP is too slow when transferring large file #91487

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msoxzw opened this issue Apr 12, 2022 · 0 comments · Fixed by #91488
Closed

The speed of asyncio UDP is too slow when transferring large file #91487

msoxzw opened this issue Apr 12, 2022 · 0 comments · Fixed by #91488
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performance Performance or resource usage topic-asyncio

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@msoxzw
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msoxzw commented Apr 12, 2022

The speed of asyncio UDP is merely a couple of Mbps if a large file, e.g. 65536 KiB, is transferred.

Test file:
https://gist.github.com/msoxzw/8ae5c488edbc2985d41563c4d9c9cc04
@msoxzw msoxzw mentioned this issue Apr 12, 2022
Merged
@AlexWaygood AlexWaygood added performance Performance or resource usage topic-asyncio labels Apr 12, 2022
miss-islington pushed a commit that referenced this issue Apr 15, 2022
@msoxzw
gh-91487: Optimize asyncio UDP speed (GH-91488)
42fabc3 
Fix #91487

When transferring a small file, e.g. 256 KiB, the speed of this PR is comparable. However, if a large file, e.g. 65536 KiB, is transferred, asyncio UDP will be over 100 times faster than the original. The speed is presumably significantly faster if a larger file is transferred, e.g. 1048576 KiB.

Automerge-Triggered-By: GH:gpshead
@CAM-Gerlach CAM-Gerlach mentioned this issue Oct 19, 2022
Merged
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gh-91487: Optimize asyncio UDP speed msoxzw/cpython
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@msoxzw @AlexWaygood