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rustfs/scripts/summarize_scanner_heal_perf.py
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2026-09-08 12:16:38 +08:00

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Python
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#!/usr/bin/env python3
"""Summarize Scanner/Heal ABBA and cache-cost profile artifacts quietly."""
from __future__ import annotations
import argparse
from collections import Counter
from decimal import Decimal
import hashlib
import json
from pathlib import Path
import sys
from typing import Any
from scanner_abba import LEGS, SCENARIOS, validate_release_evidence_manifest
MAX_JSON_BYTES = 1024 * 1024
CACHE_COST_PREFIX = "CACHE_COST "
PASS_STATES = {"pass"}
FAIL_STATES = {"fail", "failed"}
def require(condition: bool, message: str) -> None:
if not condition:
raise ValueError(message)
def read_json(path: Path) -> dict[str, Any]:
require(path.is_file(), f"missing JSON artifact: {path}")
require(path.stat().st_size <= MAX_JSON_BYTES, f"oversized JSON artifact: {path}")
with path.open(encoding="utf-8") as stream:
value = json.load(stream)
require(isinstance(value, dict), f"expected JSON object: {path}")
return value
def write_json(path: Path, value: dict[str, Any]) -> None:
path.parent.mkdir(parents=True, exist_ok=True)
path.write_text(json.dumps(value, indent=2, sort_keys=True, allow_nan=False) + "\n", encoding="utf-8")
def digest(path: Path) -> str:
with path.open("rb") as stream:
if hasattr(hashlib, "file_digest"):
return hashlib.file_digest(stream, "sha256").hexdigest()
hasher = hashlib.sha256()
while chunk := stream.read(1024 * 1024):
hasher.update(chunk)
return hasher.hexdigest()
def number(value: Any, name: str) -> Decimal:
require(type(value) in (float, int), f"invalid numeric field: {name}")
return Decimal(str(value))
def maybe_number(value: Any, name: str) -> Decimal | None:
if value is None:
return None
return number(value, name)
def pct(value: Decimal | None) -> str:
if value is None:
return "pending"
return f"{float(value * Decimal('100')):.2f}%"
def ratio(value: Decimal | None) -> str:
if value is None:
return "pending"
return f"{float(value):.3f}x"
def max_decimal(values: list[Decimal | None]) -> Decimal | None:
present = [value for value in values if value is not None]
if not present:
return None
return max(present)
def require_metric_series(value: Any, name: str, minimum: Decimal | None = None,
maximum: Decimal | None = None) -> list[Decimal | None]:
require(isinstance(value, list) and value, f"missing performance evidence field: {name}")
parsed = [maybe_number(item, name) for item in value]
for item in parsed:
if item is None:
continue
if minimum is not None:
require(item >= minimum, f"{name} below minimum")
if maximum is not None:
require(item <= maximum, f"{name} above maximum")
return parsed
def require_measured_comparison_evidence(comparison: dict[str, Any], index: int) -> None:
w10_w11 = comparison.get("w10_w11")
require(isinstance(w10_w11, dict), f"comparison {index} missing W10/W11 evidence")
pressure = require_metric_series(
w10_w11.get("foreground_pressure_high_sample_ratios"),
f"comparison {index} foreground_pressure_high_sample_ratios",
Decimal("0"),
Decimal("1"),
)
lock_wait = require_metric_series(
w10_w11.get("heal_lock_wait_p99_ms"),
f"comparison {index} heal_lock_wait_p99_ms",
Decimal("0"),
)
attempt_cost = require_metric_series(
w10_w11.get("attempt_cost_per_healed_object"),
f"comparison {index} attempt_cost_per_healed_object",
Decimal("0"),
)
require(len(pressure) == len(lock_wait) == len(attempt_cost),
f"comparison {index} W10/W11 evidence length mismatch")
candidate_attempt_cost = maybe_number(
w10_w11.get("candidate_attempt_cost_per_healed_object"),
f"comparison {index} candidate_attempt_cost_per_healed_object",
)
require(candidate_attempt_cost is None or candidate_attempt_cost >= 0,
f"comparison {index} candidate attempt cost below minimum")
def require_complete_abba_matrix(manifest: dict[str, Any], report: dict[str, Any], comparisons: list[dict[str, Any]]) -> None:
require(report.get("evidence") == manifest.get("evidence"), "manifest/report evidence mismatch")
rounds = manifest.get("rounds")
require(type(rounds) is int and 3 <= rounds <= 10, "invalid manifest.rounds")
expected_cells = len(SCENARIOS) * 2 * rounds * len(LEGS)
require(
report.get("cells") == expected_cells,
f"ABBA matrix cell count mismatch: expected {expected_cells}, got {report.get('cells')}",
)
expected_keys = {
(scenario, comparison, round_id)
for scenario in SCENARIOS
for comparison in ("build", "background")
for round_id in range(1, rounds + 1)
}
observed_keys = []
for index, comparison in enumerate(comparisons):
key = (comparison.get("scenario"), comparison.get("comparison"), comparison.get("round"))
require(key in expected_keys, f"comparison {index} is outside the ABBA matrix")
require(comparison.get("status") in PASS_STATES, f"comparison {index} did not pass")
observed_keys.append(key)
observed_set = set(observed_keys)
require(len(observed_keys) == len(observed_set), "duplicate ABBA matrix comparison")
missing = sorted(expected_keys - observed_set)
require(not missing, f"missing ABBA matrix comparison: {missing[0] if missing else ''}")
def summarize_abba(abba_dir: Path) -> dict[str, Any]:
manifest_path = abba_dir / "manifest.json"
report_path = abba_dir / "report.json"
manifest = read_json(manifest_path)
report = read_json(report_path)
report_state = report.get("status")
performance_state = report.get("performance")
require(isinstance(report_state, str) and report_state, "report.status missing")
require(isinstance(performance_state, str) and performance_state, "report.performance missing")
comparisons = report.get("comparisons")
if comparisons is None:
require(report_state not in PASS_STATES, "passing report requires comparisons")
comparisons = []
require(isinstance(comparisons, list), "report.comparisons must be a list")
counts = Counter()
p99_regressions: list[Decimal] = []
throughput_losses: list[Decimal] = []
p1_rows = []
p2_values: list[Decimal | None] = []
for index, comparison in enumerate(comparisons):
require(isinstance(comparison, dict), f"comparison {index} must be an object")
state = comparison.get("status")
require(isinstance(state, str) and state, f"comparison {index} missing status")
counts[state] += 1
p99_regressions.append(number(comparison.get("p99_regression"), f"comparison {index} p99_regression"))
throughput_change = number(comparison.get("throughput_change"), f"comparison {index} throughput_change")
throughput_losses.append(max(Decimal("0"), -throughput_change))
p1 = comparison.get("p1")
if isinstance(p1, dict):
p1_rows.append({
"scenario": comparison.get("scenario"),
"comparison": comparison.get("comparison"),
"round": comparison.get("round"),
"required_reduction": float(number(p1.get("required_reduction"), "p1.required_reduction")),
"observed_reduction": float(number(p1.get("observed_reduction"), "p1.observed_reduction")),
"repeatability_drift": (
None if p1.get("repeatability_drift") is None
else float(number(p1.get("repeatability_drift"), "p1.repeatability_drift"))
),
})
p2 = comparison.get("p2_post_stop_work_multiples")
if isinstance(p2, list):
p2_values.extend(maybe_number(value, "p2_post_stop_work_multiple") for value in p2)
measured = report.get("evidence") == "measured"
passed = report_state in PASS_STATES and performance_state in PASS_STATES and measured
if passed:
require_complete_abba_matrix(manifest, report, comparisons)
validate_release_evidence_manifest({**manifest, "evidence": "measured"})
for index, comparison in enumerate(comparisons):
require_measured_comparison_evidence(comparison, index)
gate_state = "pass" if passed else "fail"
if report_state == "synthetic_validated":
reason = "synthetic evidence validates the harness only; measured performance remains pending"
elif report_state in FAIL_STATES and isinstance(report.get("error"), str) and report["error"]:
reason = f"ABBA report status is {report_state}: {report['error']}"
elif report_state not in PASS_STATES:
reason = f"ABBA report status is {report_state}"
elif performance_state not in PASS_STATES:
reason = f"performance status is {performance_state}"
elif not measured:
reason = "measured evidence is required for a performance conclusion"
else:
reason = "measured ABBA report passed"
fixed = manifest.get("fixed", {})
require(isinstance(fixed, dict), "manifest.fixed must be an object")
return {
"gate_state": gate_state,
"reason": reason,
"status": report_state,
"performance": performance_state,
"evidence": report.get("evidence"),
"cells": report.get("cells", 0),
"completed_cells": report.get("completed_cells"),
"error": report.get("error"),
"comparisons_total": len(comparisons),
"comparison_status_counts": dict(sorted(counts.items())),
"worst_p99_regression": None if not p99_regressions else float(max(p99_regressions)),
"worst_throughput_loss": None if not throughput_losses else float(max(throughput_losses)),
"p2_worst_post_stop_work_multiple": None if max_decimal(p2_values) is None else float(max_decimal(p2_values)),
"p1_reductions": p1_rows,
"provenance": {
"abba_dir": str(abba_dir.resolve()),
"manifest_sha256": digest(manifest_path),
"report_sha256": digest(report_path),
"baseline_revision": manifest.get("baseline", {}).get("revision"),
"baseline_sha256": manifest.get("baseline", {}).get("sha256"),
"candidate_revision": manifest.get("candidate", {}).get("revision"),
"candidate_sha256": manifest.get("candidate", {}).get("sha256"),
"adapter_sha256": manifest.get("adapter_sha256"),
"collector_sha256": manifest.get("collector_sha256"),
"config_sha256": fixed.get("config_sha256"),
"dataset_sha256": fixed.get("dataset_sha256"),
"release_flags": fixed.get("release_flags"),
"durability": fixed.get("durability"),
"topology": fixed.get("topology"),
"offered_load_ops": fixed.get("offered_load_ops"),
"release_evidence": manifest.get("release_evidence"),
},
}
def cache_cost_records(path: Path) -> list[dict[str, Any]]:
require(path.is_file(), f"missing cache-cost log: {path}")
records = []
with path.open(encoding="utf-8", errors="replace") as stream:
for line_no, line in enumerate(stream, start=1):
if CACHE_COST_PREFIX not in line:
continue
payload = line.split(CACHE_COST_PREFIX, 1)[1].strip()
value = json.loads(payload)
require(isinstance(value, dict), f"cache-cost line {line_no} is not a JSON object")
require(value.get("schema") == 1, f"cache-cost line {line_no} has unsupported schema")
records.append(value)
require(records, f"no {CACHE_COST_PREFIX.strip()} records found in {path}")
return records
def summarize_cache_cost(path: Path) -> dict[str, Any]:
records = cache_cost_records(path)
scenarios = Counter()
max_wire = Decimal("0")
max_save_amp = Decimal("0")
max_clone_ns = Decimal("0")
max_encode_ns = Decimal("0")
max_save_ns = Decimal("0")
build_sources = set()
for index, record in enumerate(records):
scenarios[str(record.get("scenario"))] += 1
wire = number(record.get("cache_wire_bytes"), f"cache_cost {index} cache_wire_bytes")
save_body = number(record.get("save_body_bytes_per_sample"), f"cache_cost {index} save_body_bytes_per_sample")
require(wire > 0, f"cache_cost {index} has zero wire bytes")
max_wire = max(max_wire, wire)
max_save_amp = max(max_save_amp, save_body / wire)
for field, target in (("clone", "max_clone_ns"), ("encode", "max_encode_ns"), ("save_inclusive", "max_save_ns")):
quantiles = record.get(field)
require(isinstance(quantiles, dict), f"cache_cost {index} missing {field} quantiles")
value = number(quantiles.get("max_ns"), f"cache_cost {index} {field}.max_ns")
if target == "max_clone_ns":
max_clone_ns = max(max_clone_ns, value)
elif target == "max_encode_ns":
max_encode_ns = max(max_encode_ns, value)
else:
max_save_ns = max(max_save_ns, value)
build = record.get("build", {})
require(isinstance(build, dict), f"cache_cost {index} build must be an object")
build_sources.add((build.get("source_revision"), build.get("source_tree"), build.get("test_opt_level_override")))
return {
"records": len(records),
"scenario_counts": dict(sorted(scenarios.items())),
"max_cache_wire_bytes": int(max_wire),
"max_save_body_amplification": float(max_save_amp),
"max_clone_ns": int(max_clone_ns),
"max_encode_ns": int(max_encode_ns),
"max_save_inclusive_ns": int(max_save_ns),
"build_sources": [
{"source_revision": revision, "source_tree": tree, "test_opt_level_override": opt}
for revision, tree, opt in sorted(build_sources, key=lambda item: tuple("" if part is None else str(part) for part in item))
],
"provenance": {
"cache_cost_log": str(path.resolve()),
"cache_cost_log_sha256": digest(path),
},
}
def markdown(summary: dict[str, Any]) -> str:
abba = summary["abba"]
p2 = None if abba["p2_worst_post_stop_work_multiple"] is None else Decimal(str(abba["p2_worst_post_stop_work_multiple"]))
p99 = None if abba["worst_p99_regression"] is None else Decimal(str(abba["worst_p99_regression"]))
throughput = None if abba["worst_throughput_loss"] is None else Decimal(str(abba["worst_throughput_loss"]))
lines = [
f"# Scanner/Heal Performance Summary",
"",
f"- verdict: {summary['verdict']}",
f"- reason: {summary['reason']}",
f"- abba: status={abba['status']} performance={abba['performance']} evidence={abba['evidence']} cells={abba['cells']} comparisons={abba['comparisons_total']}",
f"- worst_p99_regression: {pct(p99)}",
f"- worst_throughput_loss: {pct(throughput)}",
f"- p2_worst_post_stop_work_multiple: {ratio(p2)}",
]
if abba.get("completed_cells") is not None:
lines.append(f"- completed_cells: {abba['completed_cells']}")
if abba.get("error"):
lines.append(f"- error: {abba['error']}")
if summary.get("cache_cost") is not None:
cache = summary["cache_cost"]
lines.extend([
f"- cache_cost_records: {cache['records']}",
f"- max_cache_wire_bytes: {cache['max_cache_wire_bytes']}",
f"- max_save_body_amplification: {cache['max_save_body_amplification']:.3f}x",
f"- max_clone_ns: {cache['max_clone_ns']}",
f"- max_encode_ns: {cache['max_encode_ns']}",
f"- max_save_inclusive_ns: {cache['max_save_inclusive_ns']}",
])
lines.extend([
"",
"## Provenance",
"",
])
for key, value in abba["provenance"].items():
lines.append(f"- {key}: {value}")
if summary.get("cache_cost") is not None:
for key, value in summary["cache_cost"]["provenance"].items():
lines.append(f"- {key}: {value}")
return "\n".join(lines) + "\n"
def build_summary(args: argparse.Namespace) -> dict[str, Any]:
abba = summarize_abba(args.abba_dir)
cache = summarize_cache_cost(args.cache_cost_log) if args.cache_cost_log else None
if args.require_cache_cost and cache is None:
raise ValueError("cache-cost profile log is required")
verdict = "PASS" if abba["gate_state"] == "pass" else "FAIL"
reason = abba["reason"]
return {"schema": 1, "verdict": verdict, "reason": reason, "abba": abba, "cache_cost": cache}
def main() -> int:
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--abba-dir", type=Path, required=True, help="Directory containing manifest.json and report.json")
parser.add_argument("--cache-cost-log", type=Path, help="Rust test output containing CACHE_COST JSON lines")
parser.add_argument("--require-cache-cost", action="store_true", help="Fail when --cache-cost-log is missing")
parser.add_argument("--json-out", type=Path, help="Write the normalized summary JSON artifact")
parser.add_argument("--markdown-out", type=Path, help="Write a compact Markdown summary artifact")
args = parser.parse_args()
try:
summary = build_summary(args)
if args.json_out:
write_json(args.json_out, summary)
if args.markdown_out:
args.markdown_out.parent.mkdir(parents=True, exist_ok=True)
args.markdown_out.write_text(markdown(summary), encoding="utf-8")
abba = summary["abba"]
print(
f"{summary['verdict']} scanner_heal_perf "
f"status={abba['status']} performance={abba['performance']} evidence={abba['evidence']} "
f"comparisons={abba['comparisons_total']} reason={summary['reason']}"
)
return 0 if summary["verdict"] == "PASS" else 1
except (ValueError, OSError, json.JSONDecodeError) as error:
print(f"FAIL scanner_heal_perf error={error}", file=sys.stderr)
return 1
if __name__ == "__main__":
sys.exit(main())