Merge into stream-nb-24-3. Improvements of LWTrace and PDisk's main cycle (#9174)

va-kuznecov · Vlad Kuznecov · va-kuznecov · commit e6dccfb3d9e0 · 2024-09-16T16:54:58.000Z
Co-authored-by: Vlad Kuznecov &lt;va-kuznecov@nebius.com&gt;
diff --git a/ydb/core/blobstorage/lwtrace_probes/blobstorage_probes.h b/ydb/core/blobstorage/lwtrace_probes/blobstorage_probes.h
@@ -207,22 +207,22 @@ struct TEventTypeField {
       NAMES("pdisk", "schedStep")) \
     PROBE(PDiskChunkReadPieceAddToScheduler, GROUPS("PDisk", "PDiskRequest"), \
       TYPES(TPDiskIdField, ui32, ui64, ui64), \
-      NAMES("pdisk", "pieceIdx", "size", "offset")) \
-    PROBE(PDiskChunkReadPieceSendToDevice, GROUPS("PDisk", "PDiskRequest"), \
-      TYPES(TPDiskIdField, ui64), \
-      NAMES("pdisk", "size")) \
+      NAMES("pdisk", "pieceIdx", "offset", "size")) \
+    PROBE(PDiskChunkReadPiecesSendToDevice, GROUPS("PDisk", "PDiskRequest"), \
+      TYPES(TPDiskIdField), \
+      NAMES("pdisk")) \
     PROBE(PDiskChunkReadPieceComplete, GROUPS("PDisk", "PDiskRequest"), \
-      TYPES(TPDiskIdField, ui64, ui64), \
-      NAMES("pdisk", "size", "relativeOffset")) \
-    PROBE(PDiskAddWritePieceToScheduler, GROUPS("PDisk", "PDiskRequest"), \
+      TYPES(TPDiskIdField, ui64, ui64, double), \
+      NAMES("pdisk", "size", "relativeOffset", "deviceTimeMs")) \
+    PROBE(PDiskChunkWriteAddToScheduler, GROUPS("PDisk", "PDiskRequest"), \
       TYPES(TPDiskIdField, ui64, double, ui64, bool, ui64, ui64), \
       NAMES("pdisk", "reqId", "creationTimeSec", "owner", "isFast", "priorityClass", "size")) \
-    PROBE(PDiskChunkWritePieceSendToDevice, GROUPS("PDisk", "PDiskRequest"), \
+    PROBE(PDiskChunkWriteLastPieceSendToDevice, GROUPS("PDisk", "PDiskRequest"), \
       TYPES(TPDiskIdField, ui64, ui64, ui64, ui64), \
       NAMES("pdisk", "owner", "chunkIdx", "pieceOffset", "pieceSize")) \
     PROBE(PDiskLogWriteComplete, GROUPS("PDisk", "PDiskRequest"), \
-      TYPES(TPDiskIdField, ui64, double, double, double, double, double, double), \
-      NAMES("pdisk", "reqId", "creationTimeSec", "costMs", "responseTimeMs", "inputTimeMs", "scheduleTimeMs", "deviceTotalTimeMs")) \
+      TYPES(TPDiskIdField, ui64, double, double, double, double, double, double, double, ui64), \
+      NAMES("pdisk", "reqId", "creationTimeSec", "costMs", "responseTimeMs", "inputTimeMs", "scheduleTimeMs", "deviceTotalTimeMs", "deviceOnlyTimeMs", "batchSize")) \
     PROBE(PDiskChunkResponseTime, GROUPS("PDisk", "PDiskRequest"), \
       TYPES(TPDiskIdField, ui64, ui64, double, ui64), \
       NAMES("pdisk", "reqId", "priorityClass", "responseTimeMs", "sizeBytes")) \
@@ -235,6 +235,12 @@ struct TEventTypeField {
     PROBE(PDiskDeviceWriteDuration, GROUPS("PDisk"), \
       TYPES(TPDiskIdField, double, ui64), \
       NAMES("pdisk", "deviceTimeMs", "size")) \
+    PROBE(PDiskDeviceGetFromDevice, GROUPS("PDisk"), \
+      TYPES(), \
+      NAMES()) \
+    PROBE(PDiskDeviceGetFromWaiting, GROUPS("PDisk"), \
+      TYPES(), \
+      NAMES()) \
     PROBE(PDiskDeviceTrimDuration, GROUPS("PDisk"), \
       TYPES(TPDiskIdField, double, ui64), \
       NAMES("pdisk", "trimTimeMs", "trimOffset")) \
@@ -255,8 +261,11 @@ struct TEventTypeField {
       TYPES(ui32, ui64, ui64), \
       NAMES("chunkIdx", "size", "offset")) \
     PROBE(PDiskUpdateCycleDetails, GROUPS("PDisk"), \
-      TYPES(float, float, float, float, float), \
-      NAMES("entireUpdateMs", "inputQueueMs", "schedulingMs", "processingMs", "waitingMs")) \
+      TYPES(ui32, float, float, float, float, float), \
+      NAMES("pdisk", "entireUpdateMs", "inputQueueMs", "schedulingMs", "processingMs", "waitingMs")) \
+    PROBE(PDiskEnqueueAllDetails, GROUPS("PDisk"), \
+      TYPES(ui64, size_t, size_t, size_t, double), \
+      NAMES("pdisk", "initialQueueSize", "processedReqs", "pushedToForsetiReqs", "spentTimeMs")) \
     PROBE(DSProxyGetEnqueue, GROUPS("DSProxy", "LWTrackStart"), TYPES(), NAMES()) \
     PROBE(DSProxyGetBootstrap, GROUPS("DSProxy"), TYPES(), NAMES()) \
     PROBE(DSProxyGetHandle, GROUPS("DSProxy", "LWTrackStart"), TYPES(), NAMES()) \
diff --git a/ydb/core/blobstorage/pdisk/blobstorage_pdisk_blockdevice_async.cpp b/ydb/core/blobstorage/pdisk/blobstorage_pdisk_blockdevice_async.cpp
@@ -242,6 +242,9 @@ class TRealBlockDevice : public IBlockDevice {
             EIoResult ret = EIoResult::TryAgain;
             while (ret == EIoResult::TryAgain) {
                 action->SubmitTime = HPNow();
+                if (action->FlushAction) {
+                    action->FlushAction->SubmitTime = action->SubmitTime;
+                }
 
                 if (op->GetType() == IAsyncIoOperation::EType::PWrite) {
                     PDISK_FAIL_INJECTION(1);
@@ -334,8 +337,8 @@ class TRealBlockDevice : public IBlockDevice {
     class TSharedCallback : public ICallback {
         ui64 NextPossibleNoop = 0;
         ui64 EndOffset = 0;
-        ui64 PrevEventGotAtCycle = HPNow();
-        ui64 PrevEstimationAtCycle = HPNow();
+        NHPTimer::STime PrevEventGotAtCycle = HPNow();
+        NHPTimer::STime PrevEstimationAtCycle = HPNow();
         ui64 PrevEstimatedCostNs = 0;
         ui64 PrevActualCostNs = 0;
 
@@ -366,29 +369,32 @@ class TRealBlockDevice : public IBlockDevice {
         void Exec(TAsyncIoOperationResult *event) {
             IAsyncIoOperation *op = event->Operation;
             // Add up the execution time of all the events
-            ui64 totalExecutionCycles = 0;
-            ui64 totalCostNs = 0;
-            ui64 eventGotAtCycle = HPNow();
+            NHPTimer::STime eventGotAtCycle = HPNow();
             AtomicSet(Device.Mon.LastDoneOperationTimestamp, eventGotAtCycle);
 
             TCompletionAction *completionAction = static_cast<TCompletionAction*>(op->GetCookie());
             FillCompletionAction(completionAction, op, event->Result);
+            completionAction->GetTime = eventGotAtCycle;
+            LWTRACK(PDiskDeviceGetFromDevice, completionAction->Orbit);
+            if (completionAction->FlushAction) {
+                completionAction->FlushAction->GetTime = eventGotAtCycle;
+                LWTRACK(PDiskDeviceGetFromDevice, completionAction->FlushAction->Orbit);
+            }
 
             Device.QuitCounter.Decrement();
             Device.IdleCounter.Decrement();
             Device.FlightControl.MarkComplete(completionAction->OperationIdx);
 
-            ui64 startCycle = Max((ui64)completionAction->SubmitTime, PrevEventGotAtCycle);
-            ui64 durationCycles = (eventGotAtCycle > startCycle) ? eventGotAtCycle - startCycle : 0;
-            totalExecutionCycles = Max(totalExecutionCycles, durationCycles);
-            totalCostNs += completionAction->CostNs;
+            NHPTimer::STime startCycle = Max(completionAction->SubmitTime, (i64)PrevEventGotAtCycle);
+            NHPTimer::STime durationCycles = (eventGotAtCycle > startCycle) ? eventGotAtCycle - startCycle : 0;
+            NHPTimer::STime totalExecutionCycles = durationCycles;
+            NHPTimer::STime totalCostNs = completionAction->CostNs;
 
-            bool isSeekExpected =
-                ((ui64)completionAction->SubmitTime + Device.SeekCostNs / 25ull >= PrevEventGotAtCycle);
+            bool isSeekExpected = (completionAction->SubmitTime + (NHPTimer::STime)Device.SeekCostNs / 25ll >= PrevEventGotAtCycle);
 
             const ui64 opSize = op->GetSize();
             Device.DecrementMonInFlight(op->GetType(), opSize);
-            if (opSize == 0) {
+            if (opSize == 0) { // Special case for flush operation, which is a read operation with 0 bytes size
                 if (op->GetType() == IAsyncIoOperation::EType::PRead) {
                     Y_ABORT_UNLESS(WaitingNoops[completionAction->OperationIdx % MaxWaitingNoops] == nullptr);
                     WaitingNoops[completionAction->OperationIdx % MaxWaitingNoops] = completionAction;
@@ -432,6 +438,9 @@ class TRealBlockDevice : public IBlockDevice {
             while (NextPossibleNoop < firstIncompleteIdx) {
                 ui64 i = NextPossibleNoop % MaxWaitingNoops;
                 if (WaitingNoops[i] && WaitingNoops[i]->OperationIdx == NextPossibleNoop) {
+                    LWTRACK(PDiskDeviceGetFromWaiting, WaitingNoops[i]->Orbit);
+                    double durationMs = HPMilliSecondsFloat(HPNow() - WaitingNoops[i]->GetTime);
+                    Device.Mon.DeviceFlushDuration.Increment(durationMs);
                     Device.CompletionThread->Schedule(WaitingNoops[i]);
                     WaitingNoops[i] = nullptr;
                 }
@@ -556,6 +565,9 @@ class TRealBlockDevice : public IBlockDevice {
             EIoResult ret = EIoResult::TryAgain;
             while (ret == EIoResult::TryAgain) {
                 action->SubmitTime = HPNow();
+                if (action->FlushAction) {
+                    action->FlushAction->SubmitTime = action->SubmitTime;
+                }
                 ret = Device.IoContext->Submit(op, Device.SharedCallback.Get());
                 if (ret == EIoResult::Ok) {
                     return true;
diff --git a/ydb/core/blobstorage/pdisk/blobstorage_pdisk_completion.h b/ydb/core/blobstorage/pdisk/blobstorage_pdisk_completion.h
@@ -12,6 +12,7 @@ namespace NKikimr::NPDisk {
 struct TCompletionAction {
     ui64 OperationIdx;
     NHPTimer::STime SubmitTime;
+    NHPTimer::STime GetTime;
     TCompletionAction *FlushAction = nullptr;
     ui64 CostNs = 0;
     NWilson::TTraceId TraceId;
diff --git a/ydb/core/blobstorage/pdisk/blobstorage_pdisk_completion_impl.cpp b/ydb/core/blobstorage/pdisk/blobstorage_pdisk_completion_impl.cpp
@@ -2,6 +2,8 @@
 #include "blobstorage_pdisk_impl.h"
 #include "blobstorage_pdisk_sectorrestorator.h"
 
+constexpr size_t MAX_RESULTS_PER_BATCH = 50; // It took ~0.25ms in VDisk's handler to process such batch
+
 namespace NKikimr {
 namespace NPDisk {
 
@@ -53,7 +55,9 @@ void TCompletionLogWrite::Exec(TActorSystem *actorSystem) {
                 HPMilliSecondsFloat(now - evLog.CreationTime),
                 HPMilliSecondsFloat(evLog.InputTime - evLog.CreationTime),
                 HPMilliSecondsFloat(evLog.ScheduleTime - evLog.InputTime),
-                HPMilliSecondsFloat(now - evLog.ScheduleTime));
+                HPMilliSecondsFloat(now - evLog.ScheduleTime),
+                HPMilliSecondsFloat(GetTime - SubmitTime),
+                batch ? batch->Result->Results.size() : 0);
         if (evLog.Result->Results) {
             evLog.Result->Results.front().Orbit = std::move(evLog.Orbit);
         }
@@ -65,7 +69,7 @@ void TCompletionLogWrite::Exec(TActorSystem *actorSystem) {
         }
         if (evLog.Result->Status == NKikimrProto::OK) {
             if (batch) {
-                if (batch->Sender == evLog.Sender) {
+                if (batch->Sender == evLog.Sender && batch->Result->Results.size() < MAX_RESULTS_PER_BATCH) {
                     batch->Result->Results.push_back(std::move(evLog.Result->Results[0]));
                 } else {
                     sendResponse(batch);
@@ -275,7 +279,9 @@ void TCompletionChunkReadPart::Exec(TActorSystem *actorSystem) {
         endBadUserOffset = 0xffffffff;
     }
 
-    LWTRACK(PDiskChunkReadPieceComplete, Read->Orbit, PDisk->PDiskId, RawReadSize, CommonBufferOffset);
+    double deviceTimeMs = HPMilliSecondsFloat(GetTime - SubmitTime);
+    LWTRACK(PDiskChunkReadPieceComplete, Orbit, PDisk->PDiskId, RawReadSize, CommonBufferOffset, deviceTimeMs);
+    Read->Orbit.Join(Orbit);
     CumulativeCompletion->PartReadComplete(actorSystem);
     CumulativeCompletion = nullptr;
 
diff --git a/ydb/core/blobstorage/pdisk/blobstorage_pdisk_completion_impl.h b/ydb/core/blobstorage/pdisk/blobstorage_pdisk_completion_impl.h
@@ -111,6 +111,7 @@ class TCompletionChunkWrite : public TCompletionAction {
             Mon->IncrementResponseTime(PriorityClass, responseTimeMs, SizeBytes);
         }
         LWTRACK(PDiskChunkResponseTime, Orbit, PDiskId, ReqId.Id, PriorityClass, responseTimeMs, SizeBytes);
+        Event->Orbit = std::move(Orbit);
         actorSystem->Send(Recipient, Event.Release());
         if (Mon) {
             Mon->GetWriteCounter(PriorityClass)->CountResponse();
diff --git a/ydb/core/blobstorage/pdisk/blobstorage_pdisk_impl.cpp b/ydb/core/blobstorage/pdisk/blobstorage_pdisk_impl.cpp
@@ -13,6 +13,8 @@
 
 #include <util/system/unaligned_mem.h>
 
+constexpr size_t MAX_REQS_PER_CYCLE = 200; // 200 requests take ~0.2ms in EnqueueAll function
+
 namespace NKikimr {
 namespace NPDisk {
 
@@ -843,9 +845,6 @@ bool TPDisk::ChunkWritePiece(TChunkWrite *evChunkWrite, ui32 pieceShift, ui32 pi
 
     guard.Release();
 
-    LWTRACK(PDiskChunkWritePieceSendToDevice, evChunkWrite->Orbit, PDiskId, evChunkWrite->Owner, chunkIdx,
-            pieceShift, pieceSize);
-
     ui32 bytesAvailable = pieceSize;
     Y_ABORT_UNLESS(evChunkWrite->BytesWritten == pieceShift);
     const ui32 count = evChunkWrite->PartsPtr->Size();
@@ -904,6 +903,9 @@ bool TPDisk::ChunkWritePiece(TChunkWrite *evChunkWrite, ui32 pieceShift, ui32 pi
         LOG_INFO(*ActorSystem, NKikimrServices::BS_PDISK, "PDiskId# %" PRIu32 " chunkIdx# %" PRIu32
             " was zero-padded after writing", (ui32)PDiskId, (ui32)chunkIdx);
     }
+    LWTRACK(PDiskChunkWriteLastPieceSendToDevice, evChunkWrite->Orbit, PDiskId, evChunkWrite->Owner, chunkIdx,
+        pieceShift, pieceSize);
+
     auto traceId = evChunkWrite->SpanStack.GetTraceId();
     evChunkWrite->Completion->Orbit = std::move(evChunkWrite->Orbit);
     writer.Flush(evChunkWrite->ReqId, &traceId, evChunkWrite->Completion.Release());
@@ -946,7 +948,7 @@ void TPDisk::SendChunkReadError(const TIntrusivePtr<TChunkRead>& read, TStringSt
 }
 
 TPDisk::EChunkReadPieceResult TPDisk::ChunkReadPiece(TIntrusivePtr<TChunkRead> &read, ui64 pieceCurrentSector,
-        ui64 pieceSizeLimit, ui64 *reallyReadDiskBytes, NWilson::TTraceId traceId) {
+        ui64 pieceSizeLimit, ui64 *reallyReadDiskBytes, NWilson::TTraceId traceId, NLWTrace::TOrbit&& orbit) {
     if (read->IsReplied) {
         return ReadPieceResultOk;
     }
@@ -1015,6 +1017,8 @@ TPDisk::EChunkReadPieceResult TPDisk::ChunkReadPiece(TIntrusivePtr<TChunkRead> &
     THolder<TCompletionChunkReadPart> completion(new TCompletionChunkReadPart(this, read, bytesToRead,
                 payloadBytesToRead, payloadOffset, read->FinalCompletion, isTheLastPart, Cfg->UseT1ha0HashInFooter, std::move(span)));
     completion->CostNs = DriveModel.TimeForSizeNs(bytesToRead, read->ChunkIdx, TDriveModel::OP_TYPE_READ);
+    LWTRACK(PDiskChunkReadPiecesSendToDevice, orbit, PDiskId);
+    completion->Orbit = std::move(orbit);
     Y_ABORT_UNLESS(bytesToRead <= completion->GetBuffer()->Size());
     ui8 *data = completion->GetBuffer()->Data();
     BlockDevice->PreadAsync(data, bytesToRead, readOffset, completion.Release(),
@@ -2279,7 +2283,7 @@ void TPDisk::ProcessChunkReadQueue() {
                         ui64 currentLimit = Min(bufferSize, piece->PieceSizeLimit - size);
                         ui64 reallyReadDiskBytes;
                         EChunkReadPieceResult result = ChunkReadPiece(read, piece->PieceCurrentSector + size / Format.SectorSize,
-                                currentLimit, &reallyReadDiskBytes, piece->SpanStack.GetTraceId());
+                                currentLimit, &reallyReadDiskBytes, piece->SpanStack.GetTraceId(), std::move(piece->Orbit));
                         isComplete = (result != ReadPieceResultInProgress);
                         // Read pieces is sliced previously and it is expected that ChunkReadPiece will read exactly
                         // currentLimit bytes
@@ -2941,7 +2945,6 @@ bool TPDisk::PreprocessRequest(TRequestBase *request) {
 
             auto result = std::make_unique<TEvChunkWriteResult>(NKikimrProto::OK, ev.ChunkIdx, ev.Cookie,
                         GetStatusFlags(ev.Owner, ev.OwnerGroupType), TString());
-            result->Orbit = std::move(ev.Orbit);
 
             ++state.OperationsInProgress;
             ++ownerData.InFlight->ChunkWrites;
@@ -3185,7 +3188,7 @@ void TPDisk::PushRequestToForseti(TRequestBase *request) {
                 TChunkWritePiece *piece = new TChunkWritePiece(whole, smallJobCount * smallJobSize, largeJobSize, std::move(span));
                 piece->EstimateCost(DriveModel);
                 AddJobToForseti(cbs, piece, request->JobKind);
-                LWTRACK(PDiskAddWritePieceToScheduler, request->Orbit, PDiskId, request->ReqId.Id,
+                LWTRACK(PDiskChunkWriteAddToScheduler, request->Orbit, PDiskId, request->ReqId.Id,
                         HPSecondsFloat(HPNow() - request->CreationTime), request->Owner, request->IsFast,
                         request->PriorityClass, whole->TotalSize);
             } else if (request->GetType() == ERequestType::RequestChunkRead) {
@@ -3206,7 +3209,8 @@ void TPDisk::PushRequestToForseti(TRequestBase *request) {
                     // Schedule small job.
                     auto piece = new TChunkReadPiece(read, idx * smallJobSize,
                             smallJobSize * Format.SectorSize, false, std::move(span));
-                    LWTRACK(PDiskChunkReadPieceAddToScheduler, read->Orbit, PDiskId, idx, idx * smallJobSize,
+                    read->Orbit.Fork(piece->Orbit);
+                    LWTRACK(PDiskChunkReadPieceAddToScheduler, piece->Orbit, PDiskId, idx, idx * smallJobSize * Format.SectorSize,
                             smallJobSize * Format.SectorSize);
                     piece->EstimateCost(DriveModel);
                     piece->SelfPointer = piece;
@@ -3217,8 +3221,9 @@ void TPDisk::PushRequestToForseti(TRequestBase *request) {
                 span.Attribute("is_last_piece", true);
                 auto piece = new TChunkReadPiece(read, smallJobCount * smallJobSize,
                         largeJobSize * Format.SectorSize, true, std::move(span));
-                LWTRACK(PDiskChunkReadPieceAddToScheduler, read->Orbit, PDiskId, smallJobCount,
-                        smallJobCount * smallJobSize, largeJobSize * Format.SectorSize);
+                read->Orbit.Fork(piece->Orbit);
+                LWTRACK(PDiskChunkReadPieceAddToScheduler, piece->Orbit, PDiskId, smallJobCount,
+                        smallJobCount * smallJobSize * Format.SectorSize, largeJobSize * Format.SectorSize);
                 piece->EstimateCost(DriveModel);
                 piece->SelfPointer = piece;
                 AddJobToForseti(cbs, piece, request->JobKind);
@@ -3406,7 +3411,14 @@ void TPDisk::ProcessYardInitSet() {
 }
 
 void TPDisk::EnqueueAll() {
+    TInstant start = TInstant::Now();
+
     TGuard<TMutex> guard(StateMutex);
+    size_t initialQueueSize = InputQueue.GetWaitingSize();
+    size_t processedReqs = 0;
+    size_t pushedToForsetiReqs = 0;
+
+
     while (InputQueue.GetWaitingSize() > 0) {
         TRequestBase* request = InputQueue.Pop();
         AtomicSub(InputQueueCost, request->Cost);
@@ -3449,9 +3461,17 @@ void TPDisk::EnqueueAll() {
         } else {
             if (PreprocessRequest(request)) {
                 PushRequestToForseti(request);
+                ++pushedToForsetiReqs;
             }
         }
+        ++processedReqs;
+        if (processedReqs >= MAX_REQS_PER_CYCLE) {
+            break;
+        }
     }
+
+    double spentTimeMs = (TInstant::Now() - start).MillisecondsFloat();
+    LWPROBE(PDiskEnqueueAllDetails, PDiskId, initialQueueSize, processedReqs, pushedToForsetiReqs, spentTimeMs);
 }
 
 void TPDisk::Update() {
diff --git a/ydb/core/blobstorage/pdisk/blobstorage_pdisk_impl.h b/ydb/core/blobstorage/pdisk/blobstorage_pdisk_impl.h
@@ -288,7 +288,7 @@ class TPDisk : public IPDisk {
     void SendChunkReadError(const TIntrusivePtr<TChunkRead>& read, TStringStream& errorReason,
             NKikimrProto::EReplyStatus status);
     EChunkReadPieceResult ChunkReadPiece(TIntrusivePtr<TChunkRead> &read, ui64 pieceCurrentSector, ui64 pieceSizeLimit,
-            ui64 *reallyReadBytes, NWilson::TTraceId traceId);
+            ui64 *reallyReadBytes, NWilson::TTraceId traceId, NLWTrace::TOrbit&& orbit);
     void SplitChunkJobSize(ui32 totalSize, ui32 *outSmallJobSize, ui32 *outLargeJObSize, ui32 *outSmallJobCount);
     ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
     // Chunk locking
diff --git a/ydb/core/blobstorage/pdisk/blobstorage_pdisk_impl_log.cpp b/ydb/core/blobstorage/pdisk/blobstorage_pdisk_impl_log.cpp
diff --git a/ydb/core/blobstorage/pdisk/blobstorage_pdisk_mon.cpp b/ydb/core/blobstorage/pdisk/blobstorage_pdisk_mon.cpp
diff --git a/ydb/core/blobstorage/pdisk/blobstorage_pdisk_mon.h b/ydb/core/blobstorage/pdisk/blobstorage_pdisk_mon.h

Original file line number	Diff line number	Diff line change
`@@ -111,6 +111,7 @@ class TCompletionChunkWrite : public TCompletionAction {`
`111`	`111`	`Mon->IncrementResponseTime(PriorityClass, responseTimeMs, SizeBytes);`
`112`	`112`	`}`
`113`	`113`	`LWTRACK(PDiskChunkResponseTime, Orbit, PDiskId, ReqId.Id, PriorityClass, responseTimeMs, SizeBytes);`
	`114`	`+ Event->Orbit = std::move(Orbit);`
`114`	`115`	`actorSystem->Send(Recipient, Event.Release());`
`115`	`116`	`if (Mon) {`
`116`	`117`	`Mon->GetWriteCounter(PriorityClass)->CountResponse();`