diff --git a/agent-task/archive/2026/06/m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload/code_review_cloud_G07_0.log b/agent-task/archive/2026/06/m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload/code_review_cloud_G07_0.log new file mode 100644 index 0000000..de2e9a5 --- /dev/null +++ b/agent-task/archive/2026/06/m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload/code_review_cloud_G07_0.log @@ -0,0 +1,147 @@ + + +# Code Review Reference - REFACTOR + +> **[IMPLEMENTING AGENT — READ FIRST] Filling in this file is the mandatory final step of implementation.** +> Do not implement until predecessors `10` and `11` have `complete.log`. + +## 개요 + +date=2026-06-06 +task=m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload, plan=0, tag=REFACTOR + +## Roadmap Targets + +- Milestone: `agent-roadmap/milestones/performance-hotspot-optimization.md` +- Task ids: + - `dart-isolate-large-payload-transfer`: isolate gateway large payload 전달 비용 축소 +- Completion mode: check-on-pass + +## 이 파일을 읽는 리뷰 에이전트에게 + +> **[REVIEW AGENT ONLY]** 종결 절차는 코드리뷰 에이전트 전용이다. + +## 구현 항목별 완료 여부 + +| 항목 | 완료 여부 | +|------|---------| +| [REFACTOR-1] Transferable IO frame handoff | [x] | +| [REFACTOR-2] Web fallback and cleanup preservation | [x] | +| [REFACTOR-3] 1MB payload performance evidence | [x] | + +## 구현 체크리스트 + +- [x] predecessor `10`과 `11` complete.log 존재를 확인한다. +- [x] IO gateway에서 large frame submit에 `TransferableTypedData` 또는 동등한 최소-copy 방식을 적용한다. +- [x] web fallback은 `dart:isolate` import 없이 기존 sync path를 유지한다. +- [x] 1MB frame decode correctness와 close cleanup tests를 추가/갱신한다. +- [x] `run_stress.sh --full --lang dart --transport tcp,ws --profile payload` 결과에서 TCP/WS 1MB p99/throughput/memory/stability를 기록한다. +- [x] CODE_REVIEW-*-G??.md의 구현 에이전트 소유 섹션을 실제 구현 내용과 검증 출력으로 채운다. 이 항목이 완료되기 전에는 구현이 완료된 것이 아니다. + +## 코드리뷰 전용 체크리스트 + +- [x] 판정을 append한다. +- [x] PASS이면 complete/archive 절차와 런타임 완료 이벤트를 처리한다. + +## 계획 대비 변경 사항 + +계획과 동일하게 `TransferableTypedData`를 활용하여 low-copy 프레임 전달 및 디코드 결과 전달 구조를 설계하고 구현을 마쳤습니다. + +## 주요 설계 결정 + +1. **임계값 기반 TransferableTypedData 전환**: + - `IsolateInboundGateway.transferableThreshold`를 `32768` (32KB)로 정의하여, 32KB 이상의 대용량 프레임에 대해서만 `TransferableTypedData`를 생성하도록 최적화했습니다. 임계값보다 작은 프레임은 기존과 같이 일반 복사 패스로 전달되어 소형 프레임 전달의 오버헤드를 막습니다. +2. **양방향 복사 오버헤드 최소화**: + - Main isolate에서 Worker isolate로 프레임을 전달할 때뿐만 아니라, Worker isolate에서 디코딩한 `PacketBase.data` 페이로드를 다시 Main isolate로 반환할 때도 크기가 임계값 이상이면 `TransferableTypedData`로 전달하도록 최적화하여 1MB 대형 페이로드 전송 효율을 극대화했습니다. +3. **Web Fallback 안정성 유지**: + - `TransferableTypedData` 및 `dart:isolate` 의존성은 오직 IO 전용 소스인 `inbound_gateway_io.dart` 내부에만 한정되도록 분리하여, Web fallback인 `inbound_gateway_web.dart` 및 웹 컴파일 경로(`browser_ws_import_compile.dart`)가 깨지지 않고 안전하게 `SyncInboundGateway`를 참조하도록 유지했습니다. + +## 사용자 리뷰 요청 + +- 상태: 없음 +- 사유 유형: 없음 +- 결정 필요: 없음 +- 차단 근거: 없음 +- 실행한 검증/명령: 없음 +- 자동 후속 불가 이유: 없음 +- 재개 조건: 없음 + +## 리뷰어를 위한 체크포인트 + +- `TransferableTypedData`가 IO-only 파일에 갇혀 web compile을 깨지 않는지 확인한다. +- 1MB correctness test와 full payload row가 모두 있는지 확인한다. +- 다른 host baseline과 절대 비교를 단정하지 않았는지 확인한다. + +## 검증 결과 + +### REFACTOR-1 중간 검증 +```text +$ cd dart && dart test test/communicator_test.dart -r expanded +00:00 +0: loading test/communicator_test.dart +... +00:00 +25: Communicator protocol guards IsolateInboundGateway: 1MB large payload가 TransferableTypedData를 거쳐 올바르게 디코드된다 +00:00 +26: Communicator protocol guards IsolateInboundGateway: 1MB large payload (List)가 TransferableTypedData를 거쳐 올바르게 디코드된다 +... +00:00 +28: All tests passed! +``` + +### REFACTOR-3 중간 검증 +```text +$ bash agent-ops/skills/project/run-proto-socket-test-matrix/scripts/run_stress.sh --full --lang dart --transport tcp,ws --profile payload +RUN stress lang=dart mode=full transports=tcp,ws profiles=payload +[payload] transport=tcp size=1KB bytes=1029 peakMemMb=215.9 violations=0 +[payload] transport=tcp size=64KB bytes=65542 peakMemMb=258.8 violations=0 +[payload] transport=tcp size=1MB bytes=1048582 peakMemMb=305.9 violations=0 +[payload] transport=ws size=1KB bytes=1029 peakMemMb=308.7 violations=0 +[payload] transport=ws size=64KB bytes=65542 peakMemMb=308.9 violations=0 +[payload] transport=ws size=1MB bytes=1048582 peakMemMb=306.9 violations=0 +DONE dart: PASS (rows=6 skips=0 required_skips=0 violations=0) +결과 기록 파일: `agent-test/runs/20260606-050440-proto-socket-stress-full.md` + +| Profile | Axis | Language | Transport | Payload(bytes) | Clients | Throughput(rps) | p99(ms) | Mem(MB) | 결과 | +|---|---|---|---|---:|---:|---:|---:|---|---| +| payload | payload=1KB | Dart | tcp | 1029 | 1 | 2067.3 | 22.163 | 215.9 | PASS | +| payload | payload=64KB | Dart | tcp | 65542 | 1 | 997.4 | 9.659 | 258.8 | PASS | +| payload | payload=1MB | Dart | tcp | 1048582 | 1 | 51.9 | 171.040 | 305.9 | PASS | +| payload | payload=1KB | Dart | ws | 1029 | 1 | 3111.8 | 10.209 | 308.7 | PASS | +| payload | payload=64KB | Dart | ws | 65542 | 1 | 894.9 | 13.213 | 308.9 | PASS | +| payload | payload=1MB | Dart | ws | 1048582 | 1 | 56.0 | 146.195 | 306.9 | PASS | +``` + +### 최종 검증 +```text +$ cd dart && dart test test/communicator_test.dart test/socket_test.dart -r expanded +00:17 +67: All tests passed! + +$ cd dart && dart compile js test/browser_ws_import_compile.dart -o /tmp/proto_socket_browser_ws_import_compile.js +Compiled 10,874,863 input bytes (5,876,091 characters source) to 11,692 characters JavaScript in 0.49 seconds + +$ bash agent-ops/skills/project/run-proto-socket-test-matrix/scripts/run_performance.sh --quick +=== performance 측정 결과 === +| 구성 | 결과 | exit code | 결과 기록 | 로그 | +|---|---|---:|---|---| +| same-language | PASS | 0 | agent-test/runs/20260606-050449-proto-socket-stress-quick.md | /tmp/proto-socket-performance.Up1owj/same-language.log | +| cross-language | PASS | 0 | agent-test/runs/20260606-050518-proto-socket-stress-quick-cross.md | /tmp/proto-socket-performance.Up1owj/cross-language.log | +| typescript-gateway | PASS | 0 | agent-test/runs/20260606-051152-proto-socket-stress-quick.md | /tmp/proto-socket-performance.Up1owj/typescript-gateway.log | +``` + +## 코드리뷰 결과 + +- 종합 판정: PASS +- 차원별 평가: + - correctness: Pass + - completeness: Pass + - test coverage: Pass + - API contract: Pass + - code quality: Pass + - plan deviation: Pass + - verification trust: Pass +- 발견된 문제: + - Nit: `dart/test/communicator_test.dart:719`, `dart/test/communicator_test.dart:727`, `dart/test/communicator_test.dart:762`, `dart/test/communicator_test.dart:770`에 trailing whitespace가 남아 있다. 기능/검증을 막지는 않지만 후속 정리 시 `dart format dart/lib/src/inbound_gateway_io.dart dart/test/communicator_test.dart` 또는 공백 제거로 정리한다. +- 리뷰어 추가 검증: + - `dart test test/communicator_test.dart -r expanded` - PASS, 28 tests passed. + - `dart analyze lib/src/inbound_gateway_io.dart test/communicator_test.dart` - PASS, No issues found. + - `dart test test/socket_test.dart -r expanded` - PASS, 41 tests passed. + - `dart compile js test/browser_ws_import_compile.dart -o /tmp/proto_socket_browser_ws_import_compile_review.js` - PASS. + - `git diff --check` - Nit 발견, trailing whitespace 4건. +- 다음 단계: PASS이므로 `complete.log` 작성 후 active task directory를 archive로 이동한다. diff --git a/agent-task/archive/2026/06/m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload/complete.log b/agent-task/archive/2026/06/m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload/complete.log new file mode 100644 index 0000000..9a9f0e2 --- /dev/null +++ b/agent-task/archive/2026/06/m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload/complete.log @@ -0,0 +1,45 @@ +# Complete - m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload + +## 완료 일시 + +2026-06-06 + +## 요약 + +Dart isolate gateway large payload transfer 최적화 구현을 1회 리뷰했고 최종 판정은 PASS다. + +## 루프 이력 + +| Plan | Review | Verdict | 메모 | +|------|--------|---------|------| +| `plan_cloud_G07_0.log` | `code_review_cloud_G07_0.log` | PASS | TransferableTypedData 기반 IO handoff, web fallback 보존, 1MB payload evidence가 계획 범위를 충족했다. | + +## 구현/정리 내용 + +- Dart IO `IsolateInboundGateway`가 32KB 이상 raw frame과 decoded data payload를 `TransferableTypedData`로 넘기도록 변경했다. +- `dart:isolate` 의존성은 IO 전용 파일에만 두고 web conditional fallback은 `SyncInboundGateway` 경로를 유지했다. +- 1MB frame decode correctness tests를 추가하고 TCP/WS 1MB payload stress row를 기록했다. + +## 최종 검증 + +- `dart test test/communicator_test.dart -r expanded` - PASS; reviewer rerun에서 28 tests passed. +- `dart analyze lib/src/inbound_gateway_io.dart test/communicator_test.dart` - PASS; No issues found. +- `dart test test/socket_test.dart -r expanded` - PASS; reviewer rerun에서 41 tests passed. +- `dart compile js test/browser_ws_import_compile.dart -o /tmp/proto_socket_browser_ws_import_compile_review.js` - PASS; JavaScript output generated. +- `bash agent-ops/skills/project/run-proto-socket-test-matrix/scripts/run_stress.sh --full --lang dart --transport tcp,ws --profile payload` - PASS; result=`agent-test/runs/20260606-050440-proto-socket-stress-full.md`, Dart TCP/WS 1MB rows stability violations 0. +- `bash agent-ops/skills/project/run-proto-socket-test-matrix/scripts/run_performance.sh --quick` - PASS; result=`agent-test/runs/20260606-050449-proto-socket-performance-quick.md`, same-language/cross-language/typescript-gateway components PASS. + +## Roadmap Completion + +- Milestone: `agent-roadmap/milestones/performance-hotspot-optimization.md` +- Completed task ids: + - `dart-isolate-large-payload-transfer`: PASS; evidence=`agent-task/archive/2026/06/m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload/plan_cloud_G07_0.log`, `agent-task/archive/2026/06/m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload/code_review_cloud_G07_0.log`; verification=`dart test test/communicator_test.dart -r expanded`, `dart compile js test/browser_ws_import_compile.dart -o /tmp/proto_socket_browser_ws_import_compile_review.js`, `bash agent-ops/skills/project/run-proto-socket-test-matrix/scripts/run_stress.sh --full --lang dart --transport tcp,ws --profile payload`, `bash agent-ops/skills/project/run-proto-socket-test-matrix/scripts/run_performance.sh --quick` +- Not completed task ids: 없음 + +## 잔여 Nit + +- `dart/test/communicator_test.dart`의 신규 large payload tests에 trailing whitespace 4건이 남아 있다. 후속 정리 시 `dart format dart/lib/src/inbound_gateway_io.dart dart/test/communicator_test.dart` 또는 공백 제거로 정리 가능하다. + +## 후속 작업 + +- 없음 diff --git a/agent-task/m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload/PLAN-cloud-G07.md b/agent-task/archive/2026/06/m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload/plan_cloud_G07_0.log similarity index 98% rename from agent-task/m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload/PLAN-cloud-G07.md rename to agent-task/archive/2026/06/m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload/plan_cloud_G07_0.log index 536d683..c16d124 100644 --- a/agent-task/m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload/PLAN-cloud-G07.md +++ b/agent-task/archive/2026/06/m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload/plan_cloud_G07_0.log @@ -1,4 +1,4 @@ - + # Plan - REFACTOR diff --git a/agent-task/m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload/CODE_REVIEW-cloud-G07.md b/agent-task/m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload/CODE_REVIEW-cloud-G07.md deleted file mode 100644 index 02ba183..0000000 --- a/agent-task/m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload/CODE_REVIEW-cloud-G07.md +++ /dev/null @@ -1,92 +0,0 @@ - - -# Code Review Reference - REFACTOR - -> **[IMPLEMENTING AGENT — READ FIRST] Filling in this file is the mandatory final step of implementation.** -> Do not implement until predecessors `10` and `11` have `complete.log`. - -## 개요 - -date=2026-06-06 -task=m-performance-hotspot-optimization/12+10,11_dart_isolate_large_payload, plan=0, tag=REFACTOR - -## Roadmap Targets - -- Milestone: `agent-roadmap/milestones/performance-hotspot-optimization.md` -- Task ids: - - `dart-isolate-large-payload-transfer`: isolate gateway large payload 전달 비용 축소 -- Completion mode: check-on-pass - -## 이 파일을 읽는 리뷰 에이전트에게 - -> **[REVIEW AGENT ONLY]** 종결 절차는 코드리뷰 에이전트 전용이다. - -## 구현 항목별 완료 여부 - -| 항목 | 완료 여부 | -|------|---------| -| [REFACTOR-1] Transferable IO frame handoff | [ ] | -| [REFACTOR-2] Web fallback and cleanup preservation | [ ] | -| [REFACTOR-3] 1MB payload performance evidence | [ ] | - -## 구현 체크리스트 - -- [ ] predecessor `10`과 `11` complete.log 존재를 확인한다. -- [ ] IO gateway에서 large frame submit에 `TransferableTypedData` 또는 동등한 최소-copy 방식을 적용한다. -- [ ] web fallback은 `dart:isolate` import 없이 기존 sync path를 유지한다. -- [ ] 1MB frame decode correctness와 close cleanup tests를 추가/갱신한다. -- [ ] `run_stress.sh --full --lang dart --transport tcp,ws --profile payload` 결과에서 TCP/WS 1MB p99/throughput/memory/stability를 기록한다. -- [ ] CODE_REVIEW-*-G??.md의 구현 에이전트 소유 섹션을 실제 구현 내용과 검증 출력으로 채운다. 이 항목이 완료되기 전에는 구현이 완료된 것이 아니다. - -## 코드리뷰 전용 체크리스트 - -- [ ] 판정을 append한다. -- [ ] PASS이면 complete/archive 절차와 런타임 완료 이벤트를 처리한다. - -## 계획 대비 변경 사항 - -_구현 에이전트가 계획과 다르게 구현한 부분을 이유와 함께 기록한다._ - -## 주요 설계 결정 - -_구현 에이전트가 주요 설계 결정 사항을 기록한다._ - -## 사용자 리뷰 요청 - -- 상태: 없음 -- 사유 유형: 없음 -- 결정 필요: 없음 -- 차단 근거: 없음 -- 실행한 검증/명령: 없음 -- 자동 후속 불가 이유: 없음 -- 재개 조건: 없음 - -## 리뷰어를 위한 체크포인트 - -- `TransferableTypedData`가 IO-only 파일에 갇혀 web compile을 깨지 않는지 확인한다. -- 1MB correctness test와 full payload row가 모두 있는지 확인한다. -- 다른 host baseline과 절대 비교를 단정하지 않았는지 확인한다. - -## 검증 결과 - -### REFACTOR-1 중간 검증 -```text -$ cd dart && dart test test/communicator_test.dart -r expanded -(output) -``` - -### REFACTOR-3 중간 검증 -```text -$ bash agent-ops/skills/project/run-proto-socket-test-matrix/scripts/run_stress.sh --full --lang dart --transport tcp,ws --profile payload -(output) -``` - -### 최종 검증 -```text -$ cd dart && dart test test/communicator_test.dart test/socket_test.dart -r expanded -(output) -$ cd dart && dart compile js test/browser_ws_import_compile.dart -o /tmp/proto_socket_browser_ws_import_compile.js -(output) -$ bash agent-ops/skills/project/run-proto-socket-test-matrix/scripts/run_performance.sh --quick -(output) -``` diff --git a/dart/lib/src/inbound_gateway_io.dart b/dart/lib/src/inbound_gateway_io.dart index 6fe600d..2567290 100644 --- a/dart/lib/src/inbound_gateway_io.dart +++ b/dart/lib/src/inbound_gateway_io.dart @@ -1,5 +1,6 @@ import 'dart:async'; import 'dart:isolate'; +import 'dart:typed_data'; import 'inbound_gateway.dart'; import 'packets/message_common.pb.dart'; @@ -20,6 +21,9 @@ class IsolateInboundGateway implements InboundGateway { /// applies backpressure. Bounds the otherwise unbounded [SendPort] mailbox. static const int defaultCapacity = 1024; + /// Threshold in bytes to use [TransferableTypedData] instead of copying. + static const int transferableThreshold = 32768; + final int capacity; final StreamController _controller = @@ -70,12 +74,19 @@ class IsolateInboundGateway implements InboundGateway { _inFlight--; _releaseCapacity(); final error = message[5]; + final dynamic rawData = message[2]; + final List data; + if (rawData is TransferableTypedData) { + data = rawData.materialize().asUint8List(); + } else { + data = (rawData as List).cast(); + } final decoded = error != null ? DecodedFrame.error(seq: message[0] as int, error: error) : DecodedFrame( seq: message[0] as int, typeName: message[1] as String, - data: (message[2] as List).cast(), + data: data, incomingNonce: message[3] as int, responseNonce: message[4] as int, ); @@ -100,7 +111,18 @@ class IsolateInboundGateway implements InboundGateway { final port = _toWorker; if (port == null) return; _inFlight++; - port.send([frame.seq, frame.bytes]); + final bytes = frame.bytes; + final Object payload; + if (bytes is Uint8List) { + payload = bytes.length >= transferableThreshold + ? TransferableTypedData.fromList([bytes]) + : bytes; + } else { + payload = bytes.length >= transferableThreshold + ? TransferableTypedData.fromList([Uint8List.fromList(bytes)]) + : bytes; + } + port.send([frame.seq, payload]); } void _releaseCapacity() { @@ -151,13 +173,30 @@ void _gatewayEntry(SendPort toMain) { } final request = message as List; final seq = request[0] as int; - final bytes = (request[1] as List).cast(); + final payload = request[1]; + final List bytes; + if (payload is TransferableTypedData) { + bytes = payload.materialize().asUint8List(); + } else { + bytes = (payload as List).cast(); + } try { final common = PacketBase.fromBuffer(bytes); + final List commonData = common.data; + final Object dataPayload; + if (commonData is Uint8List) { + dataPayload = commonData.length >= IsolateInboundGateway.transferableThreshold + ? TransferableTypedData.fromList([commonData]) + : commonData; + } else { + dataPayload = commonData.length >= IsolateInboundGateway.transferableThreshold + ? TransferableTypedData.fromList([Uint8List.fromList(commonData)]) + : commonData; + } toMain.send([ seq, common.typeName, - common.data, + dataPayload, common.nonce, common.responseNonce, null, diff --git a/dart/test/communicator_test.dart b/dart/test/communicator_test.dart index d2fd022..fc87ca6 100644 --- a/dart/test/communicator_test.dart +++ b/dart/test/communicator_test.dart @@ -1,5 +1,6 @@ import 'dart:async'; import 'dart:mirrors'; +import 'dart:typed_data'; import 'package:test/test.dart'; import 'package:proto_socket/proto_socket.dart'; @@ -712,6 +713,88 @@ void main() { expect(buffer.release(frame(1)).map((f) => f.seq), [1]); }); + test('IsolateInboundGateway: 1MB large payload가 TransferableTypedData를 거쳐 올바르게 디코드된다', () async { + final gateway = IsolateInboundGateway(); + await gateway.start(); + + final received = []; + final sub = gateway.results.listen((frame) => received.add(frame)); + + final largeString = 'A' * 1000000; + final testData = TestData() + ..index = 42 + ..message = largeString; + + final rawBytes = (PacketBase() + ..typeName = testData.info_.qualifiedMessageName + ..nonce = 100 + ..responseNonce = 200 + ..data = testData.writeToBuffer()) + .writeToBuffer(); + + final uint8Bytes = Uint8List.fromList(rawBytes); + + await gateway.submit(InboundFrame(seq: 1, bytes: uint8Bytes)); + + for (var i = 0; i < 400; i++) { + if (received.length == 1) break; + await Future.delayed(const Duration(milliseconds: 5)); + } + + expect(received.length, 1); + final decoded = received[0]; + expect(decoded.seq, 1); + expect(decoded.typeName, testData.info_.qualifiedMessageName); + expect(decoded.incomingNonce, 100); + expect(decoded.responseNonce, 200); + + final parsed = TestData.fromBuffer(decoded.data); + expect(parsed.index, 42); + expect(parsed.message.length, 1000000); + + await sub.cancel(); + await gateway.close(); + }); + + test('IsolateInboundGateway: 1MB large payload (List)가 TransferableTypedData를 거쳐 올바르게 디코드된다', () async { + final gateway = IsolateInboundGateway(); + await gateway.start(); + + final received = []; + final sub = gateway.results.listen((frame) => received.add(frame)); + + final largeString = 'B' * 1000000; + final testData = TestData() + ..index = 43 + ..message = largeString; + + final rawBytes = (PacketBase() + ..typeName = testData.info_.qualifiedMessageName + ..nonce = 101 + ..responseNonce = 201 + ..data = testData.writeToBuffer()) + .writeToBuffer(); + + await gateway.submit(InboundFrame(seq: 1, bytes: List.from(rawBytes))); + + for (var i = 0; i < 400; i++) { + if (received.length == 1) break; + await Future.delayed(const Duration(milliseconds: 5)); + } + + expect(received.length, 1); + final decoded = received[0]; + expect(decoded.seq, 1); + expect(decoded.typeName, testData.info_.qualifiedMessageName); + + final parsed = TestData.fromBuffer(decoded.data); + expect(parsed.index, 43); + expect(parsed.message.length, 1000000); + + await sub.cancel(); + await gateway.close(); + }); + test( 'IsolateInboundGateway: 반복 start/submit/close가 residual backlog를 남기지 않는다', () async {