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This PR addresses an old issue (#283) that, in python, the buffer must be recreated every time. Adding a reset method which keeps the internal buffer allocated and resets the internal state provides some performance uplifts. Added a benchmark and here is the result:

built 100 512-byte flatbuffers in 0.01sec: 6892.37/sec, 3.37MB/sec
built 100 512-byte flatbuffers (reused buffer) in 0.01sec: 10673.90/sec, 5.21MB/sec

@dbaileychess dbaileychess merged commit d47cd10 into google:master Dec 18, 2023
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Sorry for the delay, had some unrelated CI issues.

@razvanalex
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No worries, thanks for merging!

jochenparm pushed a commit to jochenparm/flatbuffers that referenced this pull request Oct 29, 2024
jochenparm pushed a commit to jochenparm/flatbuffers that referenced this pull request Oct 29, 2024
@razvanalex razvanalex deleted the py-clear-buffer branch July 3, 2025 13:44
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2 participants