diff --git a/core/rawdb/freezer.go b/core/rawdb/freezer.go
index b7824ddc0d..bcac2cabf3 100644
--- a/core/rawdb/freezer.go
+++ b/core/rawdb/freezer.go
@@ -19,6 +19,7 @@ package rawdb
 import (
 	"errors"
 	"fmt"
+	"github.com/ethereum/go-ethereum/hook"
 	"math"
 	"os"
 	"path/filepath"
@@ -186,7 +187,13 @@ func (f *Freezer) Close() error {
 // in the freezer.
 func (f *Freezer) HasAncient(kind string, number uint64) (bool, error) {
 	if table := f.tables[kind]; table != nil {
-		return table.has(number), nil
+		if table.has(number) {
+			bytes, err := table.Retrieve(number)
+			if len(bytes) > 0 && err != nil {
+				hook.Gr.CountAncientDbRead(bytes)
+			}
+			return true, nil
+		}
 	}
 	return false, nil
 }
@@ -194,7 +201,11 @@ func (f *Freezer) HasAncient(kind string, number uint64) (bool, error) {
 // Ancient retrieves an ancient binary blob from the append-only immutable files.
 func (f *Freezer) Ancient(kind string, number uint64) ([]byte, error) {
 	if table := f.tables[kind]; table != nil {
-		return table.Retrieve(number)
+		bytes, err := table.Retrieve(number)
+		if len(bytes) > 0 && err != nil {
+			hook.Gr.CountAncientDbRead(bytes)
+		}
+		return bytes, err
 	}
 	return nil, errUnknownTable
 }
diff --git a/ethdb/leveldb/leveldb.go b/ethdb/leveldb/leveldb.go
index e58efbddbe..d3b8f6c74a 100644
--- a/ethdb/leveldb/leveldb.go
+++ b/ethdb/leveldb/leveldb.go
@@ -22,6 +22,7 @@ package leveldb
 
 import (
 	"fmt"
+	"github.com/ethereum/go-ethereum/hook"
 	"strings"
 	"sync"
 	"time"
@@ -185,11 +186,13 @@ func (db *Database) Close() error {
 
 // Has retrieves if a key is present in the key-value store.
 func (db *Database) Has(key []byte) (bool, error) {
+	hook.Gr.CountLevelDbRead(key)
 	return db.db.Has(key, nil)
 }
 
 // Get retrieves the given key if it's present in the key-value store.
 func (db *Database) Get(key []byte) ([]byte, error) {
+	hook.Gr.CountLevelDbRead(key)
 	dat, err := db.db.Get(key, nil)
 	if err != nil {
 		return nil, err
@@ -469,12 +472,14 @@ type snapshot struct {
 // Has retrieves if a key is present in the snapshot backing by a key-value
 // data store.
 func (snap *snapshot) Has(key []byte) (bool, error) {
+	hook.Gr.CountLevelDbSnapshotRead(key)
 	return snap.db.Has(key, nil)
 }
 
 // Get retrieves the given key if it's present in the snapshot backing by
 // key-value data store.
 func (snap *snapshot) Get(key []byte) ([]byte, error) {
+	hook.Gr.CountLevelDbSnapshotRead(key)
 	return snap.db.Get(key, nil)
 }
 
diff --git a/hook/record.go b/hook/record.go
new file mode 100644
index 0000000000..f3949a0a8a
--- /dev/null
+++ b/hook/record.go
@@ -0,0 +1,132 @@
+package hook
+
+import "sync"
+
+type Record struct {
+	ancientDbReadCnt          int // ancient DB 접근 횟수
+	levelDbReadCnt            int // level DB 접근 횟수
+	levelDbSnapshotReadCnt    int // level DB 스냅샷 접근 횟수
+	duplicatedReadCnt         int // 중복 디비 접근 횟수
+	duplicatedSnapshotReadCnt int // 중복 스냅샷 접근 횟수
+	readDbKeySet              *map[string]bool
+	readDbKeySetLock          sync.RWMutex
+	readSnapshotDbKeySet      *map[string]bool
+	readSnapshotDbKeySetLock  sync.RWMutex
+	rpcLock                   sync.Mutex
+}
+
+var Gr = Record{
+	ancientDbReadCnt:          0,
+	levelDbReadCnt:            0,
+	levelDbSnapshotReadCnt:    0,
+	duplicatedReadCnt:         0,
+	duplicatedSnapshotReadCnt: 0,
+	readDbKeySet:              &map[string]bool{},
+	readDbKeySetLock:          sync.RWMutex{},
+	readSnapshotDbKeySet:      &map[string]bool{},
+	readSnapshotDbKeySetLock:  sync.RWMutex{},
+	rpcLock:                   sync.Mutex{},
+}
+
+func (gr *Record) Lock() {
+	gr.rpcLock.Lock()
+}
+
+func (gr *Record) Unlock() {
+	gr.rpcLock.Unlock()
+}
+
+func (gr *Record) Reset() {
+	gr.ancientDbReadCnt = 0
+	gr.levelDbReadCnt = 0
+	gr.levelDbSnapshotReadCnt = 0
+	gr.duplicatedReadCnt = 0
+	gr.duplicatedSnapshotReadCnt = 0
+	gr.readDbKeySet = &map[string]bool{}
+	gr.readSnapshotDbKeySet = &map[string]bool{}
+}
+
+func (gr *Record) addReadKeySet(key string) {
+	gr.readDbKeySetLock.Lock()
+	defer gr.readDbKeySetLock.Unlock()
+
+	(*gr.readDbKeySet)[key] = true
+}
+
+func (gr *Record) addReadSnapshotKeySet(key string) {
+	gr.readSnapshotDbKeySetLock.Lock()
+	defer gr.readSnapshotDbKeySetLock.Unlock()
+
+	(*gr.readSnapshotDbKeySet)[key] = true
+}
+
+func (gr *Record) isAlreadyRead(key string) bool {
+	gr.readDbKeySetLock.RLock()
+	defer gr.readDbKeySetLock.RUnlock()
+	if (*gr.readDbKeySet)[key] == true {
+		return true
+	}
+	return false
+}
+
+func (gr *Record) countDuplicatedKey(key []byte) {
+	keyStr := string(key[:])
+	if gr.isAlreadyRead(keyStr) {
+		gr.duplicatedReadCnt++
+	} else {
+		gr.addReadKeySet(keyStr)
+	}
+}
+
+func (gr *Record) isAlreadyReadSnapshot(key string) bool {
+	gr.readSnapshotDbKeySetLock.RLock()
+	defer gr.readSnapshotDbKeySetLock.RUnlock()
+	if (*gr.readSnapshotDbKeySet)[key] == true {
+		return true
+	}
+	return false
+}
+
+func (gr *Record) countDuplicatedSnapshotKey(key []byte) {
+	keyStr := string(key[:])
+	if gr.isAlreadyReadSnapshot(keyStr) {
+		gr.duplicatedSnapshotReadCnt++
+	} else {
+		gr.addReadSnapshotKeySet(keyStr)
+	}
+}
+
+func (gr *Record) CountAncientDbRead(key []byte) {
+	gr.countDuplicatedKey(key)
+	gr.ancientDbReadCnt++
+}
+
+func (gr *Record) CountLevelDbRead(key []byte) {
+	gr.countDuplicatedKey(key)
+	gr.levelDbReadCnt++
+}
+
+func (gr *Record) CountLevelDbSnapshotRead(key []byte) {
+	gr.countDuplicatedSnapshotKey(key)
+	gr.levelDbSnapshotReadCnt++
+}
+
+func (gr *Record) AncientDbReadCnt() int {
+	return gr.ancientDbReadCnt
+}
+
+func (gr *Record) LevelDbReadCnt() int {
+	return gr.levelDbReadCnt
+}
+
+func (gr *Record) LevelDbSnapshotReadCnt() int {
+	return gr.levelDbSnapshotReadCnt
+}
+
+func (gr *Record) DuplicatedReadCnt() int {
+	return gr.duplicatedReadCnt
+}
+
+func (gr *Record) DuplicatedSnapshotReadCnt() int {
+	return gr.duplicatedSnapshotReadCnt
+}
diff --git a/rpc/handler.go b/rpc/handler.go
index f44e4d7b01..b1ec725f97 100644
--- a/rpc/handler.go
+++ b/rpc/handler.go
@@ -19,6 +19,7 @@ package rpc
 import (
 	"context"
 	"encoding/json"
+	"github.com/ethereum/go-ethereum/hook"
 	"reflect"
 	"strconv"
 	"strings"
@@ -509,8 +510,15 @@ func (h *handler) handleCall(cp *callProc, msg *jsonrpcMessage) *jsonrpcMessage
 		return msg.errorResponse(&invalidParamsError{err.Error()})
 	}
 	start := time.Now()
-	answer := h.runMethod(cp.ctx, msg, callb, args)
 
+	hook.Gr.Lock()
+	hook.Gr.Reset()
+	h.log.Error("Before runMethod", "msg.Method", msg.Method, "args", args)
+	answer := h.runMethod(cp.ctx, msg, callb, args)
+	h.log.Error("Result", "levelDb", hook.Gr.LevelDbReadCnt(), "levelDb duplicated", hook.Gr.DuplicatedReadCnt(), "levelDbSnapshot", hook.Gr.LevelDbSnapshotReadCnt(), "levelDbSnapshot duplicated", hook.Gr.DuplicatedSnapshotReadCnt(), "ancientDb", hook.Gr.AncientDbReadCnt())
+	h.log.Error("Statistics", "levelDbNewRead", hook.Gr.LevelDbReadCnt()-hook.Gr.DuplicatedReadCnt(), "levelDbSnapshotNewRead", hook.Gr.LevelDbSnapshotReadCnt()-hook.Gr.DuplicatedSnapshotReadCnt(), "ancientDbRead", hook.Gr.AncientDbReadCnt())
+	h.log.Error("After runMethod", "msg.Method", msg.Method, "args", args)
+	hook.Gr.Unlock()
 	// Collect the statistics for RPC calls if metrics is enabled.
 	// We only care about pure rpc call. Filter out subscription.
 	if callb != h.unsubscribeCb {