diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index 17027a6599..4b9fda8ea8 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -2018,10 +2018,8 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *ethconfig.Config) {
 			}
 		} else if numCpu == 1 {
 			parallelNum = 1 // single CPU core
-		} else if numCpu < 10 {
-			parallelNum = numCpu - 1
 		} else {
-			parallelNum = 8
+			parallelNum = numCpu - 1
 		}
 		cfg.ParallelTxNum = parallelNum
 	}
diff --git a/core/parallel_state_processor.go b/core/parallel_state_processor.go
index 19e50947ca..1c0b4c135f 100644
--- a/core/parallel_state_processor.go
+++ b/core/parallel_state_processor.go
@@ -441,7 +441,7 @@ func (p *ParallelStateProcessor) toConfirmTxIndex(targetTxIndex int, isStage2 bo
 func (p *ParallelStateProcessor) toConfirmTxIndexResult(txResult *ParallelTxResult, isStage2 bool) bool {
 	txReq := txResult.txReq
 	if p.hasConflict(txResult, isStage2) {
-		log.Warn(fmt.Sprintf("HasConflict!! block: %d, txIndex: %d\n", txResult.txReq.block.NumberU64(), txResult.txReq.txIndex))
+		log.Info(fmt.Sprintf("HasConflict!! block: %d, txIndex: %d\n", txResult.txReq.block.NumberU64(), txResult.txReq.txIndex))
 		return false
 	}
 	if isStage2 { // not its turn
diff --git a/core/state/parallel_statedb.go b/core/state/parallel_statedb.go
index 520526227d..476ed99165 100644
--- a/core/state/parallel_statedb.go
+++ b/core/state/parallel_statedb.go
@@ -46,7 +46,7 @@ func hasKvConflict(slotDB *ParallelStateDB, addr common.Address, key common.Hash
 		}
 		if valUnconfirm, ok := slotDB.getKVFromUnconfirmedDB(addr, key); ok {
 			if !bytes.Equal(val.Bytes(), valUnconfirm.Bytes()) {
-				log.Warn("IsSlotDBReadsValid KV read is invalid in unconfirmed", "addr", addr,
+				log.Debug("IsSlotDBReadsValid KV read is invalid in unconfirmed", "addr", addr,
 					"valSlot", val, "valUnconfirm", valUnconfirm,
 					"SlotIndex", slotDB.parallel.SlotIndex,
 					"txIndex", slotDB.txIndex, "baseTxIndex", slotDB.parallel.baseTxIndex)
@@ -57,7 +57,7 @@ func hasKvConflict(slotDB *ParallelStateDB, addr common.Address, key common.Hash
 	valMain := mainDB.GetStateNoUpdate(addr, key)
 
 	if !bytes.Equal(val.Bytes(), valMain.Bytes()) {
-		log.Warn("hasKvConflict is invalid", "addr", addr,
+		log.Debug("hasKvConflict is invalid", "addr", addr,
 			"key", key, "valSlot", val,
 			"valMain", valMain, "SlotIndex", slotDB.parallel.SlotIndex,
 			"txIndex", slotDB.txIndex, "baseTxIndex", slotDB.parallel.baseTxIndex,
@@ -1288,7 +1288,7 @@ func (slotDB *ParallelStateDB) IsParallelReadsValid(isStage2 bool) bool {
 			}
 			if nonceUnconfirm, ok := slotDB.getNonceFromUnconfirmedDB(addr); ok {
 				if nonceSlot != nonceUnconfirm {
-					log.Warn("IsSlotDBReadsValid nonce read is invalid in unconfirmed", "addr", addr,
+					log.Debug("IsSlotDBReadsValid nonce read is invalid in unconfirmed", "addr", addr,
 						"nonceSlot", nonceSlot, "nonceUnconfirm", nonceUnconfirm, "SlotIndex", slotDB.parallel.SlotIndex,
 						"txIndex", slotDB.txIndex, "baseTxIndex", slotDB.parallel.baseTxIndex)
 					return false
@@ -1301,7 +1301,7 @@ func (slotDB *ParallelStateDB) IsParallelReadsValid(isStage2 bool) bool {
 			nonceMain = mainObj.Nonce()
 		}
 		if nonceSlot != nonceMain {
-			log.Warn("IsSlotDBReadsValid nonce read is invalid", "addr", addr,
+			log.Debug("IsSlotDBReadsValid nonce read is invalid", "addr", addr,
 				"nonceSlot", nonceSlot, "nonceMain", nonceMain, "SlotIndex", slotDB.parallel.SlotIndex,
 				"txIndex", slotDB.txIndex, "baseTxIndex", slotDB.parallel.baseTxIndex,
 				"mainIndex", mainDB.txIndex)
@@ -1331,7 +1331,7 @@ func (slotDB *ParallelStateDB) IsParallelReadsValid(isStage2 bool) bool {
 		}
 
 		if balanceSlot.Cmp(balanceMain) != 0 {
-			log.Warn("IsSlotDBReadsValid balance read is invalid", "addr", addr,
+			log.Debug("IsSlotDBReadsValid balance read is invalid", "addr", addr,
 				"balanceSlot", balanceSlot, "balanceMain", balanceMain, "SlotIndex", slotDB.parallel.SlotIndex,
 				"txIndex", slotDB.txIndex, "baseTxIndex", slotDB.parallel.baseTxIndex,
 				"mainIndex", mainDB.txIndex)
@@ -1422,7 +1422,7 @@ func (slotDB *ParallelStateDB) IsParallelReadsValid(isStage2 bool) bool {
 			codeMain = object.Code()
 		}
 		if !bytes.Equal(codeSlot, codeMain) {
-			log.Warn("IsSlotDBReadsValid code read is invalid", "addr", addr,
+			log.Debug("IsSlotDBReadsValid code read is invalid", "addr", addr,
 				"len codeSlot", len(codeSlot), "len codeMain", len(codeMain), "SlotIndex", slotDB.parallel.SlotIndex,
 				"txIndex", slotDB.txIndex, "baseTxIndex", slotDB.parallel.baseTxIndex,
 				"mainIndex", mainDB.txIndex)
@@ -1437,7 +1437,7 @@ func (slotDB *ParallelStateDB) IsParallelReadsValid(isStage2 bool) bool {
 			codeHashMain = common.BytesToHash(object.CodeHash())
 		}
 		if !bytes.Equal(codeHashSlot.Bytes(), codeHashMain.Bytes()) {
-			log.Warn("IsSlotDBReadsValid codehash read is invalid", "addr", addr,
+			log.Debug("IsSlotDBReadsValid codehash read is invalid", "addr", addr,
 				"codeHashSlot", codeHashSlot, "codeHashMain", codeHashMain, "SlotIndex", slotDB.parallel.SlotIndex,
 				"txIndex", slotDB.txIndex, "baseTxIndex", slotDB.parallel.baseTxIndex, "mainIndex", mainDB.txIndex)
 			return false
@@ -1450,7 +1450,7 @@ func (slotDB *ParallelStateDB) IsParallelReadsValid(isStage2 bool) bool {
 			stateMain = true // addr exist in main DB
 		}
 		if stateSlot != stateMain {
-			log.Warn("IsSlotDBReadsValid addrState read invalid(true: exist, false: not exist)",
+			log.Debug("IsSlotDBReadsValid addrState read invalid(true: exist, false: not exist)",
 				"addr", addr, "stateSlot", stateSlot, "stateMain", stateMain,
 				"SlotIndex", slotDB.parallel.SlotIndex,
 				"txIndex", slotDB.txIndex, "baseTxIndex", slotDB.parallel.baseTxIndex, "mainIndex", mainDB.txIndex)
@@ -1461,7 +1461,7 @@ func (slotDB *ParallelStateDB) IsParallelReadsValid(isStage2 bool) bool {
 	for addr, destructRead := range slotDB.parallel.addrSnapDestructsReadsInSlot {
 		mainObj := mainDB.getDeletedStateObjectNoUpdate(addr)
 		if mainObj == nil {
-			log.Warn("IsSlotDBReadsValid snapshot destructs read invalid, address should exist",
+			log.Debug("IsSlotDBReadsValid snapshot destructs read invalid, address should exist",
 				"addr", addr, "destruct", destructRead,
 				"SlotIndex", slotDB.parallel.SlotIndex,
 				"txIndex", slotDB.txIndex, "baseTxIndex", slotDB.parallel.baseTxIndex)
@@ -1471,7 +1471,7 @@ func (slotDB *ParallelStateDB) IsParallelReadsValid(isStage2 bool) bool {
 		_, destructMain := mainDB.snapDestructs[addr] // addr not exist
 		slotDB.snapParallelLock.RUnlock()
 		if destructRead != destructMain && addr.Hex() != "0x0000000000000000000000000000000000000001" {
-			log.Warn("IsSlotDBReadsValid snapshot destructs read invalid",
+			log.Debug("IsSlotDBReadsValid snapshot destructs read invalid",
 				"addr", addr, "destructRead", destructRead, "destructMain", destructMain,
 				"SlotIndex", slotDB.parallel.SlotIndex,
 				"txIndex", slotDB.txIndex, "baseTxIndex", slotDB.parallel.baseTxIndex,