Establish native micro runtime checkpoint

1 files changed, 177 insertions, 0 deletions

diff --git a/research/experiments/003-json-fanout/results/2026-09-22-linux-aarch64/plan.json b/research/experiments/003-json-fanout/results/2026-09-22-linux-aarch64/plan.json
new file mode 100644
index 0000000..3ee7b4a
--- /dev/null
+++ b/research/experiments/003-json-fanout/results/2026-09-22-linux-aarch64/plan.json
@@ -0,0 +1,177 @@
+{
+  "version": 1,
+  "written_before_measurement": true,
+  "seed": 20260923,
+  "repeats": 5,
+  "policies": [
+    {
+      "name": "borrow",
+      "policy": "borrow"
+    },
+    {
+      "name": "copy",
+      "policy": "copy"
+    },
+    {
+      "name": "shared_copy",
+      "policy": "shared_copy"
+    },
+    {
+      "name": "threshold2",
+      "policy": "threshold",
+      "ratio": 2
+    },
+    {
+      "name": "threshold8",
+      "policy": "threshold",
+      "ratio": 8
+    },
+    {
+      "name": "compact",
+      "policy": "compact",
+      "ratio": 2
+    },
+    {
+      "name": "copy_no_pool",
+      "policy": "copy",
+      "pool": 0
+    }
+  ],
+  "cases": [
+    {
+      "name": "one_slow",
+      "shape": "large",
+      "records": 1024,
+      "keys": [
+        "tag"
+      ],
+      "hold_us": [
+        8000
+      ],
+      "service_us": [
+        0
+      ],
+      "budget": 8388608,
+      "slots": 64
+    },
+    {
+      "name": "three_distinct_speeds",
+      "shape": "large",
+      "records": 1024,
+      "keys": [
+        "body",
+        "tag",
+        "tag"
+      ],
+      "hold_us": [
+        0,
+        5000,
+        8000
+      ],
+      "service_us": [
+        0,
+        0,
+        0
+      ],
+      "budget": 8388608,
+      "slots": 64
+    },
+    {
+      "name": "same_large_field",
+      "shape": "large",
+      "records": 1024,
+      "keys": [
+        "body",
+        "body",
+        "body"
+      ],
+      "hold_us": [
+        0,
+        5000,
+        8000
+      ],
+      "service_us": [
+        0,
+        0,
+        0
+      ],
+      "budget": 8388608,
+      "slots": 64
+    },
+    {
+      "name": "slow_large_field",
+      "shape": "large",
+      "records": 1024,
+      "keys": [
+        "tag",
+        "tag",
+        "body"
+      ],
+      "hold_us": [
+        0,
+        5000,
+        8000
+      ],
+      "service_us": [
+        0,
+        0,
+        0
+      ],
+      "budget": 8388608,
+      "slots": 64
+    },
+    {
+      "name": "mixed_tight",
+      "shape": "mixed",
+      "records": 1024,
+      "keys": [
+        "body",
+        "tag",
+        "tag"
+      ],
+      "hold_us": [
+        0,
+        5000,
+        8000
+      ],
+      "service_us": [
+        0,
+        0,
+        0
+      ],
+      "budget": 2097152,
+      "slots": 64
+    },
+    {
+      "name": "metadata_heavy",
+      "shape": "metadata",
+      "records": 512,
+      "keys": [
+        "body",
+        "tag",
+        "tag"
+      ],
+      "hold_us": [
+        0,
+        5000,
+        8000
+      ],
+      "service_us": [
+        0,
+        0,
+        0
+      ],
+      "budget": 2097152,
+      "slots": 64
+    }
+  ],
+  "expectations": [
+    "A slow small-field consumer can retain the input after a fast large-field consumer finishes.",
+    "Sharing identical compact copies can remove duplicate per-consumer copies without a new runtime.",
+    "Late compaction may save copied bytes or fail to beat early size-based copying; all remaining owners matter.",
+    "Parser temporary memory and reader growth must be charged, even when retained selections are small.",
+    "No novel-policy advantage or production service SLO is presumed."
+  ],
+  "comparison_rule": "Report all fixed presets; exploratory measurements, no trained/held-out policy or significance claim.",
+  "limits": "Real yyjson parser and actual bytes, but synthetic NDJSON corpus and sink delays, three synchronous consumers in one event loop, no open-loop arrivals, thread races, durable output, or independent parser comparison."
+}