unseen-eval: calibrated replay deadline + native agreement check, docker-lane diagnostics, proof 4.4 record; engine runner cleans up fetched sources

gVisor replays exhausted the hook's 30 s deadline in the snapshot step on a
1,725-file repository; cluster replays now use 30 s x a measured slowdown
factor, verified on a native sample. The engine runner deletes each pin's fetched
source (1.8 GB had accumulated), caps the cache at 500 MB and refuses below
1.5 GB free. Proof 4.4: two engine pins via the generic dispatcher match the VM
baseline exactly. Implemented with Codex.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
This commit is contained in:
Marius Ciepluch
2026-10-05 08:14:57 +02:00
co-authored by Claude Opus 5.5
parent 5dc86c2f3f
commit 6d27c9bfcf
13 changed files with 976 additions and 25 deletions
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"""Offline calibration, placement, agreement and Docker diagnostic controls."""
import importlib
import json
import subprocess
import sys
from pathlib import Path
from types import SimpleNamespace
import pytest
sys.path.insert(0, str(Path(__file__).resolve().parents[1]))
c = importlib.import_module("benchmarks.unseen.calibrate")
r = importlib.import_module("benchmarks.unseen.replay")
s = importlib.import_module("benchmarks.unseen.score")
b = importlib.import_module("benchmarks.ax.batch")
def timing_record(identity="opaque", factor=1, lane="docker"):
return {
"id": identity,
"lane": lane,
"repo": "never-publish",
"kind": "ordinary",
"instrument": {
"head_verified": True,
"base_verified": True,
"changed_bytes": {"app.py": 10},
"hook_exit": 0,
"hook_bytes_read": 10,
"timings": {"pre-push": 60 * factor},
},
"push": {
"timings": {
f"comparison_0_{k}_seconds": v * factor
for k, v in (("resolution", 1), ("provenance", 2), ("snapshot", 4), ("preparation", 6), ("quick", 1))
},
"quick_tier": [{"bytes_read": 10, "findings": []}],
"scans": [{"scan": {"build_seconds": 20 * factor, "query_seconds": 30 * factor}}],
},
}
def test_calibration_median_bootstrap_and_privacy():
result = c.slowdown([1, 10, 100], [2, 20, 200])
assert result == {"n": 3, "factor": 2, "bootstrap95": [2, 2]}
varied = c.slowdown([1] * 5, [1, 2, 3, 4, 5])
assert varied["factor"] == 3
assert varied["bootstrap95"] == [1, 5]
assert varied == c.slowdown([1] * 5, [1, 2, 3, 4, 5])
record = c.calibration_record([timing_record()], [timing_record(factor=3, lane="ax")])
assert record["quick_total"]["factor"] == 3
assert record["pairs"][0]["native"]["quick_total"] == 10 # Snapshot is nested, not added twice.
assert record["engine_build"]["factor"] == record["engine_queries"]["factor"] == 3
assert "never-publish" not in json.dumps(record)
with pytest.raises(ValueError):
c.slowdown([0], [2])
bad = timing_record()
bad["push"]["snapshots"] = [{"boundaries": [{"reason": "deadline_exhausted"}]}]
with pytest.raises(ValueError, match="deadline"):
c.stage_times(bad)
bad = timing_record()
del bad["push"]["timings"]["comparison_0_quick_seconds"]
with pytest.raises(ValueError, match="missing"):
c.stage_times(bad)
@pytest.mark.parametrize(
"lane,arm,expected",
[
("ax", "default", 75),
("ax", "long_deadline", 750),
("docker", "default", 30),
("docker", "long_deadline", 300),
],
)
def test_scaled_task_contract(lane, arm, expected):
item = r.make_item({"id": "a"}, arm, "image", deadline_scale=2.5, lane=lane)
spec = json.loads(item.inputs["SPEC_URL"])
assert spec["hook_flags"] == ["--deadline", str(expected)]
assert spec["deadline_seconds"] == expected and spec["deadline_scale"] == 2.5
entry = importlib.import_module("benchmarks.unseen.replay_entry")
entry.validate_spec({**spec, "repository_url": "https://public.example/test", "base": "a" * 40, "head": "b" * 40})
def test_native_sample_and_agreement():
native = [timing_record(str(i)) for i in range(100)]
cluster = [timing_record(str(i), lane="ax") for i in range(100)]
assert r.sample_changes(native, 20) == r.sample_changes(list(reversed(native)), 20)
report = s.agreement(cluster, native)
assert report["rate"] == 1 and report["baseline_eligible"]
assert s.agreement(cluster[:20], native[:20])["flagged"] # Perfect small sample is insufficient.
cluster[0]["push"]["quick_tier"][0]["findings"] = [{"cwe": "CWE-89"}]
report = s.agreement(cluster, native)
assert report["disagreements"] == ["0"] and report["rate"] == 0.99
assert report["flagged"]
cluster[0]["instrument"] = {}
report = s.agreement(cluster, native)
assert report["unknown"] == ["0"] and report["flagged"]
assert s.agreement([], [])["flagged"]
def test_docker_error_capture_and_preflight(tmp_path, monkeypatch):
calls = []
monkeypatch.setenv("TEST_SECRET", "hidden-value")
lane = object.__new__(b.DockerLane)
lane.args = SimpleNamespace(docker_image_bytes=100)
lane.workload = SimpleNamespace(image="pinned-image")
lane._prepared = False
def runner(command, **kwargs):
calls.append(command)
if command[:2] == ["docker", "info"]:
return subprocess.CompletedProcess(command, 0, "/docker-data\n", "")
if command[0] == "df":
return subprocess.CompletedProcess(command, 0, "Avail\n2000000000\n", "")
return subprocess.CompletedProcess(command, 125, "", "pull denied hidden-value https://host.example/?signature=private\nlast error")
lane.runner = runner
record = lane(None, tmp_path, 0)
assert record["status"] == "instrument_failure"
assert record["docker_errors"][0]["exit_code"] == 125
assert record["docker_errors"][0]["stderr"].endswith("last error")
assert "hidden-value" not in json.dumps(record) and "private" not in json.dumps(record)
assert [cmd[0] for cmd in calls] == ["docker", "df", "docker"]
assert calls[-1] == ["docker", "pull", "pinned-image"]
assert (tmp_path / "docker-error.json").exists()
lane.args.docker_image_bytes = 2000000000
calls.clear()
record = lane(None, tmp_path, 1)
assert "refusing Docker pull" in record["docker_errors"][0]["stderr"]
assert len(calls) == 2
def test_docker_launch_error_survives_transport(tmp_path, monkeypatch):
monkeypatch.setenv("S3_ENDPOINT", "https://store.example")
class Store:
def _put(self, *args):
pass
def _delete(self, *args):
pass
def presign_get(self, *args):
return "https://store.example/secret"
presign_put = presign_get
image = "registry/image@sha256:" + "a" * 64
lane = b.DockerLane(
SimpleNamespace(atespace="default"),
b.Workload(image, frozenset({"SPEC_URL", "RESULT_URL"}), 60, None),
store=Store(),
runner=lambda command, **kw: subprocess.CompletedProcess(command, 0 if command[1] == "rm" else 125, "", "runtime missing"),
)
lane._prepared = True
item = r.make_item({"id": "x"}, "default", image)
record = lane(item, tmp_path, 0)
assert record["docker_errors"] == [{"step": "run", "exit_code": 125, "stderr": "runtime missing"}]
assert record["status"] == "instrument_failure"
def test_placement_scales_cluster_but_not_vm_fallback(tmp_path, monkeypatch):
observed = []
class Transport:
def __init__(self, args, workload):
assert workload.deadline >= 750 + 600
def __call__(self, item, output, attempt):
spec = json.loads(item.inputs["SPEC_URL"])
observed.append(spec)
return {"status": "quick_only"}
def dispatch(items, workload, out, executors, **kwargs):
for lane in ("ax", "docker"):
record = executors[lane](items[0], out, 0)
assert record["lane"] == lane
assert record["deadline_seconds"] == (750 if lane == "ax" else 300)
return False
monkeypatch.setattr(r, "AXLane", Transport)
monkeypatch.setattr(r, "DockerLane", Transport)
monkeypatch.setattr(r, "dispatch", dispatch)
args = SimpleNamespace(arm="long_deadline", image="test-image")
assert not r.run_replays([{"id": "opaque"}], args, tmp_path, "mixed", deadline_scale=2.5)
assert observed[0]["id"] == observed[1]["id"]
assert observed[0]["hook_flags"] == ["--deadline", "750"]
assert observed[1]["hook_flags"] == ["--deadline", "300"]
def test_calibration_cli_writes_anonymous_record(tmp_path, monkeypatch):
manifest, record = tmp_path / "manifest.json", tmp_path / "record.json"
changes = [{"id": str(i), "repo": "do-not-publish"} for i in range(25)]
monkeypatch.setattr(c, "load_slice", lambda *args: changes)
calls = []
def replay(selected, args, out, lane, **kwargs):
calls.append((selected, lane, kwargs))
return False
monkeypatch.setattr(c, "run_replays", replay)
monkeypatch.setattr(
c,
"load_records",
lambda path: [
timing_record(str(i), factor=3 if path.name == "cluster" else 1, lane="ax" if path.name == "cluster" else "docker")
for i in range(20)
],
)
monkeypatch.setattr(
sys,
"argv",
[
"calibrate",
"--manifest",
str(manifest),
"--image",
"digest",
"--docker-image-bytes",
"100",
"--out",
str(tmp_path / "raw"),
"--record",
str(record),
],
)
assert c.main() == 0
assert len(calls[0][0]) == 20 and calls[0][0] == calls[1][0]
assert [call[1] for call in calls] == ["docker", "ax"]
assert all(call[2]["deadline"] == 600 for call in calls)
payload = record.read_text()
assert "do-not-publish" not in payload and "never-publish" not in payload
assert json.loads(payload)["quick_total"]["factor"] == 3