⚡ Optimize FeedbackConnection.items performance and robustness#4
⚡ Optimize FeedbackConnection.items performance and robustness#4
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- Replaced immutable bytes concatenation and slicing with `bytearray` and `del` to avoid $O(N^2)$ performance degradation. - Fixed a bug where processing would prematurely terminate if a received chunk was smaller than 6 bytes. - Updated loop condition to correctly handle 6-byte record headers. - Verified performance improvement: processing 16k tokens in a single chunk improved from 0.2447s to 0.0416s. Co-authored-by: Skywyze <7504109+Skywyze@users.noreply.github.com>
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This PR optimizes the
FeedbackConnection.itemsgenerator inapns.py.The original implementation used
buff += chunkandbuff = buff[bytes_to_read:], which led to quadratic time complexity due to repeated copying of the immutablebytesbuffer. By switching tobytearrayand usingextend()anddel, data accumulation and consumption are now significantly more efficient.Additionally, a bug was fixed where the loop would
breakif a chunk smaller than 6 bytes was received. This now correctly continues to fetch more data until enough is available to parse the record header.Performance impact:
All existing tests pass, and the partial chunk bug was verified fixed with a new test case.
PR created automatically by Jules for task 8078810807298983349 started by @Skywyze