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|
{
"version": 1,
"written_before_measurement": true,
"seed": 20260922,
"repeats": 5,
"slots": 512,
"policies": [
{
"name": "borrow",
"policy": "borrow",
"pool": 1
},
{
"name": "copy",
"policy": "copy",
"pool": 1
},
{
"name": "threshold2",
"policy": "threshold",
"ratio": 2,
"pool": 1
},
{
"name": "threshold4",
"policy": "threshold",
"ratio": 4,
"pool": 1
},
{
"name": "threshold8",
"policy": "threshold",
"ratio": 8,
"pool": 1
},
{
"name": "pressure",
"policy": "pressure",
"pool": 1
},
{
"name": "project",
"policy": "project",
"pool": 1
},
{
"name": "copy_no_pool",
"policy": "copy",
"pool": 0
}
],
"cases": [
{
"name": "sparse_slow",
"shape": "sparse",
"records": 2048,
"budget": 8388608,
"hold_us": 5000,
"service_us": 20
},
{
"name": "dense_slow",
"shape": "dense",
"records": 2048,
"budget": 8388608,
"hold_us": 5000,
"service_us": 20
},
{
"name": "mixed_slow",
"shape": "mixed",
"records": 2048,
"budget": 8388608,
"hold_us": 5000,
"service_us": 20
},
{
"name": "mixed_tight",
"shape": "mixed",
"records": 2048,
"budget": 2097152,
"hold_us": 5000,
"service_us": 20
},
{
"name": "sparse_fast",
"shape": "sparse",
"records": 2048,
"budget": 8388608,
"hold_us": 0,
"service_us": 0
}
],
"expectations": [
"Borrow retains full source allocations for small selections.",
"Copy can add CPU and transient source plus destination memory for dense selections.",
"A current-pressure rule need not outperform a static size rule or early projection.",
"Pool reuse can reduce allocation calls while increasing reserved idle memory.",
"No Pure-specific advantage, application SLO, or statistical significance is presumed."
],
"comparison_rule": "Report all presets and repetitions; no post-hoc winner is called an out-of-sample tuned policy.",
"limits": "Single FIFO local pipeline with synthetic delayed sink. No Sonic/Node/.NET benchmark, fan-out, persistent cache, generic JSON parser, external open-loop arrivals, or production SLO."
}
|
