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Replaced per-iteration Vec::with_capacity(max_bytes) in the growth loop, binary search loop, and final serialization with a single reusable buffer cleared via .clear(). Target: lading_payload/src/trace_agent/v04.rs::V04::to_bytes Technique: buffer-reuse Micro-benchmarks: trace_agent_throughput/10MiB: -3.6% time / +3.7% throughput trace_agent_throughput/100MiB: -2.6% time / +2.7% throughput Macro-benchmarks (payloadtool): Time: ~0% (dominated by payloadtool overhead) Memory: -65.6% (33.51 MiB -> 11.51 MiB total allocated) Allocations: -1.2% (18,142 -> 17,922) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Moved this back to draft, it's an optimization run using the latest skills. I want to make sure that any subsequent runs don't target any in flight optimizations and I need something "pending". |
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Summary
Vec::with_capacity(max_bytes)allocations inV04::to_bytesgrowth loop, binary search loop, and final serialization with a single reusable buffer cleared via.clear()max_byteseach perto_bytescallBenchmark Results
Micro-benchmarks (criterion)
trace_agent_throughput/10MiB: -3.6% time / +3.7% throughput (p<0.05, "Performance has improved")trace_agent_throughput/100MiB: -2.6% time / +2.7% throughput (p<0.05, "Performance has improved")Macro-benchmarks (payloadtool)
Validation
🤖 Generated with Claude Code