diff --git a/source/dnode/mnode/impl/src/mndDb.c b/source/dnode/mnode/impl/src/mndDb.c
index c5f6d179d8c2f3d983944303de385139dc00f333..832a4617b056b4c8e8ed0a4699176189b50298de 100644
--- a/source/dnode/mnode/impl/src/mndDb.c
+++ b/source/dnode/mnode/impl/src/mndDb.c
@@ -1389,7 +1389,7 @@ static int32_t mndTrimDb(SMnode *pMnode, SDbObj *pDb) {
   SSdb       *pSdb = pMnode->pSdb;
   SVgObj     *pVgroup = NULL;
   void       *pIter = NULL;
-  SVTrimDbReq trimReq = {.timestamp = taosGetTimestampMs(), .maxSpeed = 1048576 << 5}; // TODO: use specified maxSpeed
+  SVTrimDbReq trimReq = {.timestamp = taosGetTimestampMs(), .maxSpeed = 1048576 << 2}; // TODO: use specified maxSpeed
   int32_t     reqLen = tSerializeSVTrimDbReq(NULL, 0, &trimReq);
   int32_t     contLen = reqLen + sizeof(SMsgHead);
 
@@ -1413,7 +1413,7 @@ static int32_t mndTrimDb(SMnode *pMnode, SDbObj *pDb) {
     if (code != 0) {
       mError("vgId:%d, failed to send vnode-trim request to vnode since 0x%x", pVgroup->vgId, code);
     } else {
-      mInfo("vgId:%d, send vnode-trim request to vnode, time:%d", pVgroup->vgId, trimReq.timestamp);
+      mInfo("vgId:%d, send vnode-trim request to vnode, time:%" PRIi64, pVgroup->vgId, trimReq.timestamp);
     }
     sdbRelease(pSdb, pVgroup);
   }
diff --git a/source/dnode/vnode/src/tsdb/tsdbFS.c b/source/dnode/vnode/src/tsdb/tsdbFS.c
index 53d04cc9c16c6cd132f2be551942d42e61ad3b71..81ad1d0e7f2641434433e3930e6a95899aea15df 100644
--- a/source/dnode/vnode/src/tsdb/tsdbFS.c
+++ b/source/dnode/vnode/src/tsdb/tsdbFS.c
@@ -1101,34 +1101,35 @@ int32_t tsdbFSUpdDel(STsdb *pTsdb, STsdbFS *pFS, STsdbFS *pFSNew, int32_t maxFid
     ASSERT(pSetOld->pHeadF->commitID == pSetNew->pHeadF->commitID);
     ASSERT(pSetOld->pHeadF->size == pSetNew->pHeadF->size);
     ASSERT(pSetOld->pHeadF->offset == pSetNew->pHeadF->offset);
-    ASSERT(!sameDisk);
 
-    // head
-    *pSetOld->pHeadF = *pSetNew->pHeadF;
-    pSetOld->pHeadF->nRef = 1;
+    if (!sameDisk) {
+      // head
+      *pSetOld->pHeadF = *pSetNew->pHeadF;
+      pSetOld->pHeadF->nRef = 1;
 
-    // data
-    ASSERT(pSetOld->pDataF->size == pSetNew->pDataF->size);
-    *pSetOld->pDataF = *pSetNew->pDataF;
-    pSetOld->pDataF->nRef = 1;
+      // data
+      ASSERT(pSetOld->pDataF->size == pSetNew->pDataF->size);
+      *pSetOld->pDataF = *pSetNew->pDataF;
+      pSetOld->pDataF->nRef = 1;
 
-    // sma
-    ASSERT(pSetOld->pSmaF->size == pSetNew->pSmaF->size);
-    *pSetOld->pSmaF = *pSetNew->pSmaF;
-    pSetOld->pSmaF->nRef = 1;
+      // sma
+      ASSERT(pSetOld->pSmaF->size == pSetNew->pSmaF->size);
+      *pSetOld->pSmaF = *pSetNew->pSmaF;
+      pSetOld->pSmaF->nRef = 1;
 
-    // stt
-    ASSERT(pSetOld->nSttF == pSetNew->nSttF);
-    for (int32_t iStt = 0; iStt < pSetOld->nSttF; ++iStt) {
-      ASSERT(pSetOld->aSttF[iStt]->size == pSetNew->aSttF[iStt]->size);
-      ASSERT(pSetOld->aSttF[iStt]->offset == pSetNew->aSttF[iStt]->offset);
+      // stt
+      ASSERT(pSetOld->nSttF == pSetNew->nSttF);
+      for (int32_t iStt = 0; iStt < pSetOld->nSttF; ++iStt) {
+        ASSERT(pSetOld->aSttF[iStt]->size == pSetNew->aSttF[iStt]->size);
+        ASSERT(pSetOld->aSttF[iStt]->offset == pSetNew->aSttF[iStt]->offset);
 
-      *pSetOld->aSttF[iStt] = *pSetNew->aSttF[iStt];
-      pSetOld->aSttF[iStt]->nRef = 1;
-    }
+        *pSetOld->aSttF[iStt] = *pSetNew->aSttF[iStt];
+        pSetOld->aSttF[iStt]->nRef = 1;
+      }
 
-    // set diskId
-    pSetOld->diskId = pSetNew->diskId;
+      // set diskId
+      pSetOld->diskId = pSetNew->diskId;
+    }
 
     iOld++;
     iNew++;
diff --git a/source/dnode/vnode/src/tsdb/tsdbOpen.c b/source/dnode/vnode/src/tsdb/tsdbOpen.c
index 71d745972e58d9414b83c4f0074fe39c4f1b0419..5072d1a15efc4f3fef09087d75d3e2d6bc3dcabd 100644
--- a/source/dnode/vnode/src/tsdb/tsdbOpen.c
+++ b/source/dnode/vnode/src/tsdb/tsdbOpen.c
@@ -73,6 +73,7 @@ int tsdbOpen(SVnode *pVnode, STsdb **ppTsdb, const char *dir, STsdbKeepCfg *pKee
 
   pTsdb->trimHdl.maxRetentFid = INT32_MIN;
   pTsdb->trimHdl.minCommitFid = INT32_MAX;
+  pTsdb->trimHdl.limitSpeed = 1;
 
   tsdbDebug("vgId:%d, tsdb is opened at %s, days:%d, keep:%d,%d,%d", TD_VID(pVnode), pTsdb->path, pTsdb->keepCfg.days,
             pTsdb->keepCfg.keep0, pTsdb->keepCfg.keep1, pTsdb->keepCfg.keep2);
diff --git a/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c b/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c
index db39d98b9e994c29363bc8baabd771666eacd8c2..7020e52cfa4cfd1464fba03b3c2a30d4ac8d248e 100644
--- a/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c
+++ b/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c
@@ -634,10 +634,16 @@ static int64_t tsdbFSendFile(TdFilePtr pOutFD, TdFilePtr pInFD, int64_t size, in
     cost = taosGetTimestampMs() - startMs;
     tBytes += nBytes;
 
+    int64_t nSleep = 0;
     if (cost < 0) {
-      taosMsleep(1000);
+      nSleep = 1000;
     } else if (cost < 1000) {
-      taosMsleep(1000 - cost);
+      nSleep = 1000 - cost;
+    }
+    if (nSleep > 0) {
+      taosMsleep(nSleep);
+      tsdbDebug("sendFile from %p to %p, fSize:%" PRIi64 ", maxSpeed:%d, msleep:%" PRIi64, pOutFD, pInFD, size, speed,
+                nSleep);
     }
   }
   if (offset < size) {
@@ -659,9 +665,9 @@ int32_t tsdbDFileSetCopy(STsdb *pTsdb, SDFileSet *pSetFrom, SDFileSet *pSetTo, i
   char      fNameFrom[TSDB_FILENAME_LEN];
   char      fNameTo[TSDB_FILENAME_LEN];
   int32_t   speed = 0;
+  int64_t   fStatSize = 0;
 
   if (atomic_load_8(&pTsdb->trimHdl.limitSpeed)) {
-    ASSERT(maxSpeed > 0);
     speed = maxSpeed;
   }
 
@@ -678,6 +684,9 @@ int32_t tsdbDFileSetCopy(STsdb *pTsdb, SDFileSet *pSetFrom, SDFileSet *pSetTo, i
     code = TAOS_SYSTEM_ERROR(errno);
     goto _err;
   }
+  fStatSize = 0;
+  taosStatFile(fNameFrom, &fStatSize, 0);
+  ASSERT(fStatSize == tsdbLogicToFileSize(pSetFrom->pHeadF->size, szPage));
   n = tsdbFSendFile(pOutFD, PInFD, tsdbLogicToFileSize(pSetFrom->pHeadF->size, szPage), speed);
   if (n < 0) {
     code = TAOS_SYSTEM_ERROR(errno);
@@ -699,7 +708,10 @@ int32_t tsdbDFileSetCopy(STsdb *pTsdb, SDFileSet *pSetFrom, SDFileSet *pSetTo, i
     code = TAOS_SYSTEM_ERROR(errno);
     goto _err;
   }
-  n = tsdbFSendFile(pOutFD, PInFD, LOGIC_TO_FILE_OFFSET(pSetFrom->pDataF->size, szPage), speed);
+  fStatSize = 0;
+  taosStatFile(fNameFrom, &fStatSize, 0);
+  ASSERT(fStatSize == tsdbLogicToFileSize(pSetFrom->pDataF->size, szPage));
+  n = tsdbFSendFile(pOutFD, PInFD, tsdbLogicToFileSize(pSetFrom->pDataF->size, szPage), speed);
   if (n < 0) {
     code = TAOS_SYSTEM_ERROR(errno);
     goto _err;
@@ -720,6 +732,9 @@ int32_t tsdbDFileSetCopy(STsdb *pTsdb, SDFileSet *pSetFrom, SDFileSet *pSetTo, i
     code = TAOS_SYSTEM_ERROR(errno);
     goto _err;
   }
+  fStatSize = 0;
+  taosStatFile(fNameFrom, &fStatSize, 0);
+  ASSERT(fStatSize == tsdbLogicToFileSize(pSetFrom->pSmaF->size, szPage));
   n = tsdbFSendFile(pOutFD, PInFD, tsdbLogicToFileSize(pSetFrom->pSmaF->size, szPage), speed);
   if (n < 0) {
     code = TAOS_SYSTEM_ERROR(errno);
@@ -742,6 +757,9 @@ int32_t tsdbDFileSetCopy(STsdb *pTsdb, SDFileSet *pSetFrom, SDFileSet *pSetTo, i
       code = TAOS_SYSTEM_ERROR(errno);
       goto _err;
     }
+  fStatSize = 0;
+  taosStatFile(fNameFrom, &fStatSize, 0);
+  ASSERT(fStatSize == tsdbLogicToFileSize(pSetFrom->aSttF[iStt]->size, szPage));
     n = tsdbFSendFile(pOutFD, PInFD, tsdbLogicToFileSize(pSetFrom->aSttF[iStt]->size, szPage), speed);
     if (n < 0) {
       code = TAOS_SYSTEM_ERROR(errno);
diff --git a/source/dnode/vnode/src/tsdb/tsdbRetention2.c b/source/dnode/vnode/src/tsdb/tsdbRetention2.c
index 47fe3c538445325e9d5d59aeaaa08bcec536ae7d..9594334808c865c3c087cdf080d8d8f431ac89f0 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRetention2.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRetention2.c
@@ -17,9 +17,15 @@
 
 enum { RETENTION_NO = 0, RETENTION_EXPIRED = 1, RETENTION_MIGRATE = 2 };
 
+#if 1
 #define MIGRATE_MIN_FSIZE (1048576 << 9)  // 512 MB
 #define MIGRATE_MAX_SPEED (1048576 << 5)  // 32 MB
 #define MIGRATE_MIN_COST  (5)             // second
+#else
+#define MIGRATE_MIN_FSIZE (1048576 << 5)  // 32 MB
+#define MIGRATE_MAX_SPEED (1048576 << 2)  // 4  MB
+#define MIGRATE_MIN_COST  (5)             // second
+#endif
 
 static bool    tsdbShouldDoMigrate(STsdb *pTsdb);
 static int32_t tsdbShouldDoRetention(STsdb *pTsdb, int64_t now);
@@ -103,7 +109,6 @@ _wait_commit_end:
     if (++nLoops > 1000) {
       nLoops = 0;
       sched_yield();
-      printf("%s:%d sche_yield() minCommitFid:%d maxFid:%d\n", __func__, __LINE__, pTsdb->trimHdl.minCommitFid, maxFid);
     }
   }
   if (atomic_val_compare_exchange_8(&pTsdb->trimHdl.state, 0, 1) == 0) {
@@ -160,6 +165,7 @@ _exit:
  */
 static int32_t tsdbProcessMigrate(STsdb *pTsdb, int64_t now, int32_t maxSpeed, int32_t retention) {
   int32_t code = 0;
+  int32_t nBatch = 0;
   int32_t nLoops = 0;
   int32_t maxFid = INT32_MIN;
   int64_t fSize = 0;
@@ -186,6 +192,8 @@ _migrate_loop:
     int32_t    expLevel = tsdbFidLevel(pSet->fid, &pTsdb->keepCfg, now);
     SDiskID    did;
 
+    if (pSet->diskId.level == expLevel) continue;
+
     if (expLevel > 0) {
       ASSERT(pSet->fid > maxFid);
       maxFid = pSet->fid;
@@ -197,6 +205,7 @@ _migrate_loop:
         fSize += pSet->aSttF[iStt]->size;
       }
       if (fSize / MIGRATE_MAX_SPEED > MIGRATE_MIN_COST) {
+        tsdbInfo("vgId:%d migrate loop[%d] with maxFid:%d", TD_VID(pTsdb->pVnode), nBatch, maxFid);
         break;
       }
     }
@@ -209,7 +218,6 @@ _wait_commit_end:
     if (++nLoops > 1000) {
       nLoops = 0;
       sched_yield();
-      printf("%s:%d sche_yield()\n", __func__, __LINE__);
     }
   }
   if (atomic_val_compare_exchange_8(&pTsdb->trimHdl.state, 0, 1) == 0) {
@@ -231,9 +239,14 @@ _wait_commit_end:
 
     if (pSet->fid > maxFid) break;
 
+    tsdbInfo("vgId:%d migrate loop[%d] with maxFid:%d, fid:%d, did:%d, level:%d, expLevel:%d", TD_VID(pTsdb->pVnode),
+             nBatch, maxFid, pSet->fid, pSet->diskId.id, pSet->diskId.level, expLevel);
+
     if (expLevel < 0) {
       SET_DFSET_EXPIRED(pSet);
-    } else if (expLevel > 0) {
+    } else {
+      if (expLevel == pSet->diskId.level) continue;
+
       if (tfsAllocDisk(pTsdb->pVnode->pTfs, expLevel, &did) < 0) {
         code = terrno;
         goto _exit;
@@ -277,6 +290,9 @@ _merge_fs:
   }
   taosThreadRwlockUnlock(&pTsdb->rwLock);
 
+  ++nBatch;
+  goto _migrate_loop;
+
 _exit:
   tsdbFSDestroy(&fs);
   tsdbFSDestroy(&fsLatest);
diff --git a/source/dnode/vnode/src/vnd/vnodeSvr.c b/source/dnode/vnode/src/vnd/vnodeSvr.c
index 0263740e4a581b2d1d4c2bbefd8c1d601be51483..a80211f402dc3f93805cecb7b182cc5caf1b377c 100644
--- a/source/dnode/vnode/src/vnd/vnodeSvr.c
+++ b/source/dnode/vnode/src/vnd/vnodeSvr.c
@@ -389,7 +389,7 @@ static int32_t vnodeProcessTrimReq(SVnode *pVnode, int64_t version, void *pReq,
     goto _exit;
   }
 
-  vInfo("vgId:%d, trim vnode request will be processed, time:%d", pVnode->config.vgId, trimReq.timestamp);
+  vInfo("vgId:%d, trim vnode request will be processed, time:%" PRIi64, pVnode->config.vgId, trimReq.timestamp);
 
   // process
   code = tsdbDoRetention(pVnode->pTsdb, trimReq.timestamp);
@@ -461,7 +461,7 @@ static int32_t vnodeProcessTrimReq(SVnode *pVnode, int64_t version, void *pReq,
     goto _exit;
   }
 
-  vInfo("vgId:%d, trim vnode request will be processed, time:%d", TD_VID(pVnode), pVndTrimReq->trimReq.timestamp);
+  vInfo("vgId:%d, trim vnode request will be processed, time:%" PRIi64, TD_VID(pVnode), pVndTrimReq->trimReq.timestamp);
 
   TdThreadAttr thAttr = {0};
   taosThreadAttrInit(&thAttr);