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Merging this PR will not alter performance

⚡ 7 improved benchmarks
❌ 4 regressed benchmarks
✅ 128 untouched benchmarks
⏩ 135 skipped benchmarks¹

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

	Mode	Benchmark	`BASE`	`HEAD`	Efficiency
❌	Simulation	`test_decode_type[arm-msgpack-False]`	803.1 µs	865.3 µs	-7.19%
❌	Simulation	`test_decode_type[arm-json-None]`	867.2 µs	898.1 µs	-3.45%
❌	Simulation	`test_decode_type[arm-json-False]`	921.3 µs	951.9 µs	-3.21%
❌	Simulation	`test_decode_type[arm-msgpack-True]`	789.5 µs	813.9 µs	-2.99%
⚡	Simulation	`test_decode_type[arm-msgpack-memoryview]`	23.2 µs	22.1 µs	+4.62%
⚡	Simulation	`test_decode_type[arm-msgpack-None]`	748 µs	717.8 µs	+4.22%
⚡	Simulation	`test_decode_type[arm-json-True]`	938.5 µs	908 µs	+3.36%
⚡	Simulation	`test_decode_type[arm-json-enum]`	1.2 ms	1.1 ms	+3.06%
⚡	Simulation	`test_encode_type[arm-json-datetime]`	1.7 ms	1.7 ms	+3.02%
⚡	Simulation	`test_decode_convert_type_non_strict[arm-msgpack-int]`	2.3 ms	2.2 ms	+2.42%
⚡	Simulation	`test_decode_type[arm-msgpack-float]`	2.2 ms	2.2 ms	+2.35%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.

_{Comparing sobolevn:issue-1096 ( a447893 ) with main ( 551e2dc )}

135 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

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Jul 2, 2026

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