doc: record the boot-cache results (#46) - #59
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…ection (#46) The 'Re-measured at 12fab4b' section's conclusion — that the remaining start-up cost was a flat profile with no hot spot, and that closing it meant an image rather than micro-optimisation — was right about the remedy and wrong about the diagnosis. A sampling profiler saw list primitives because the cost was spread over hundreds of identical small operations; timing the boot by phase found what those operations were: the compiler, invoked 964 times from inside a warm boot. Records what each of those 964 invocations was, the load-invariant 964 -> 17 result, and the interleaved timings, with the measurement caveat that this box ran at load average 10-18 throughout. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Follow-up to #57: the
Re-measured at 12fab4bsection ofdoc/PERF-URDR-RESULTS.mdstill says the remaining start-up cost is a flat profile with no hot spot left to cut. #57 cut it, so that section is marked superseded on the start-up side and a new section records what was actually there (the compiler, 964 invocations per warm boot), the load-invariant 964 → 17 result, and the interleaved timings with the load-average caveat.Docs only — no code change.