spfcraze
cf803603dc
perf(agent): memoize send-path tool-call argument canonicalization
...
The pre-send normalization pass re-canonicalized every historical tool
call's argument JSON on every API-call iteration — quadratic in session
tool-call count. Route it through a bounded value-keyed memo (the
_MSG_TOKENS_CACHE idiom from agent/model_metadata.py): per-iteration
cost is now proportional to new tool calls, not all of them.
Measured (simulated growing session, repo venv): session-total
canonicalization cost 1056 ms -> 58 ms at 500 tool calls x 2 KB args
(18.3x), 5744 ms -> 79 ms at 500 x 16 KB (72.5x). Byte-parity with the
pre-fix logic is asserted at every iteration (unicode, nested,
malformed, empty, non-string args), and a call-count test proves
json.loads invocations went from K(K+1)/2 to K per session.
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..
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