diff --git a/conf/config.yaml b/conf/config.yaml
index 3b79882932..b7153fa04d 100644
--- a/conf/config.yaml
+++ b/conf/config.yaml
@@ -28,7 +28,7 @@ timesync:
 storage:
   driver: TIKV
   address: localhost
-  port: 2379
+  port: 0
   accesskey: ab
   secretkey:  dd
 
@@ -41,7 +41,7 @@ pulsar:
 reader:
   clientid: 1
   stopflag: -1
-  readerqueuesize: 10240
+  readerqueuesize: 1024
   searchchansize: 10000
   key2segchansize: 10000
   inserttopicstart: 0
diff --git a/core/src/dog_segment/SegmentNaive.cpp b/core/src/dog_segment/SegmentNaive.cpp
index 61d6ed5e02..64ef132904 100644
--- a/core/src/dog_segment/SegmentNaive.cpp
+++ b/core/src/dog_segment/SegmentNaive.cpp
@@ -615,9 +615,9 @@ SegmentNaive::GetMemoryUsageInBytes() {
             total_bytes += vec_ptr->IndexSize();
         }
     }
-    int64_t ins_n = (record_.reserved + DefaultElementPerChunk - 1) & ~(DefaultElementPerChunk - 1);
+    int64_t ins_n = (record_.reserved + DefaultElementPerChunk - 1) & (DefaultElementPerChunk - 1);
     total_bytes += ins_n * (schema_->get_total_sizeof() + 16 + 1);
-    int64_t del_n = (deleted_record_.reserved + DefaultElementPerChunk - 1) & ~(DefaultElementPerChunk - 1);
+    int64_t del_n = (deleted_record_.reserved + DefaultElementPerChunk - 1) & (DefaultElementPerChunk - 1);
     total_bytes += del_n * (16 * 2);
     return total_bytes;
 }
diff --git a/core/unittest/test_c_api.cpp b/core/unittest/test_c_api.cpp
index 60419237af..d2618ac2f6 100644
--- a/core/unittest/test_c_api.cpp
+++ b/core/unittest/test_c_api.cpp
@@ -289,9 +289,6 @@ TEST(CApiTest, GetMemoryUsageInBytesTest) {
   auto partition = NewPartition(collection, partition_name);
   auto segment = NewSegment(partition, 0);
 
-  auto old_memory_usage_size = GetMemoryUsageInBytes(segment);
-  std::cout << "old_memory_usage_size = " << old_memory_usage_size << std::endl;
-
   std::vector<char> raw_data;
   std::vector<uint64_t> timestamps;
   std::vector<int64_t> uids;
@@ -320,8 +317,6 @@ TEST(CApiTest, GetMemoryUsageInBytesTest) {
 
   auto memory_usage_size = GetMemoryUsageInBytes(segment);
 
-  std::cout << "new_memory_usage_size = " << memory_usage_size << std::endl;
-
   assert(memory_usage_size == 1898459);
 
   DeleteCollection(collection);
diff --git a/proxy/src/message_client/ClientV2.cpp b/proxy/src/message_client/ClientV2.cpp
index df07ef6f01..d2cb29d825 100644
--- a/proxy/src/message_client/ClientV2.cpp
+++ b/proxy/src/message_client/ClientV2.cpp
@@ -178,6 +178,7 @@ Status MsgClientV2::SendMutMessage(const milvus::grpc::InsertParam &request,
     auto channel_id = makeHash(&uid, sizeof(uint64_t)) % topic_num;
     try {
       mut_msg.set_segment_id(segment_id(request.collection_name(), channel_id, timestamp));
+      printf("%ld \n", mut_msg.segment_id());
       mut_msg.mutable_rows_data()->CopyFrom(request.rows_data(i));
       mut_msg.mutable_extra_params()->CopyFrom(request.extra_params());
 
diff --git a/reader/read_node/meta.go b/reader/read_node/meta.go
index bda1a9638d..c8e4be19dd 100644
--- a/reader/read_node/meta.go
+++ b/reader/read_node/meta.go
@@ -104,7 +104,6 @@ func (node *QueryNode) processSegmentCreate(id string, value string) {
 	}
 	printSegmentStruct(segment)
 
-	// TODO: fix this after channel range config finished
 	//if !isSegmentChannelRangeInQueryNodeChannelRange(segment) {
 	//	return
 	//}
@@ -118,6 +117,7 @@ func (node *QueryNode) processSegmentCreate(id string, value string) {
 			newSegment := partition.NewSegment(newSegmentID)
 			newSegment.SegmentStatus = SegmentOpened
 			newSegment.SegmentCloseTime = segment.CloseTimeStamp
+			partition.OpenedSegments = append(partition.OpenedSegments, newSegment)
 			node.SegmentsMap[newSegmentID] = newSegment
 		}
 	}
@@ -147,7 +147,6 @@ func (node *QueryNode) processSegmentModify(id string, value string) {
 	}
 	printSegmentStruct(segment)
 
-	// TODO: fix this after channel range config finished
 	//if !isSegmentChannelRangeInQueryNodeChannelRange(segment) {
 	//	return
 	//}
diff --git a/reader/read_node/partition.go b/reader/read_node/partition.go
index d308593548..01006edd50 100644
--- a/reader/read_node/partition.go
+++ b/reader/read_node/partition.go
@@ -16,7 +16,8 @@ import "C"
 type Partition struct {
 	PartitionPtr   C.CPartition
 	PartitionName  string
-	Segments []*Segment
+	OpenedSegments []*Segment
+	ClosedSegments []*Segment
 }
 
 func (p *Partition) NewSegment(segmentId int64) *Segment {
@@ -27,7 +28,7 @@ func (p *Partition) NewSegment(segmentId int64) *Segment {
 	segmentPtr := C.NewSegment(p.PartitionPtr, C.ulong(segmentId))
 
 	var newSegment = &Segment{SegmentPtr: segmentPtr, SegmentId: segmentId}
-	p.Segments = append(p.Segments, newSegment)
+	p.OpenedSegments = append(p.OpenedSegments, newSegment)
 	return newSegment
 }
 
diff --git a/reader/read_node/query_node.go b/reader/read_node/query_node.go
index 0c163ec55e..dbd75ca0e4 100644
--- a/reader/read_node/query_node.go
+++ b/reader/read_node/query_node.go
@@ -248,11 +248,17 @@ func (node *QueryNode) RunInsertDelete(wg *sync.WaitGroup) {
 	const CountMsgNum = 1000 * 1000
 
 	if Debug {
+		var start = time.Now()
 		var printFlag = true
-		var startTime = true
-		var start time.Time
 
 		for {
+			// Test insert time
+			if printFlag && node.msgCounter.InsertCounter >= CountMsgNum {
+				printFlag = false
+				timeSince := time.Since(start)
+				fmt.Println("============> Do", node.msgCounter.InsertCounter, "Insert in", timeSince, "<============")
+			}
+
 			var msgLen = node.PrepareBatchMsg()
 			var timeRange = TimeRange{node.messageClient.TimeSyncStart(), node.messageClient.TimeSyncEnd()}
 			assert.NotEqual(nil, 0, timeRange.timestampMin)
@@ -262,12 +268,6 @@ func (node *QueryNode) RunInsertDelete(wg *sync.WaitGroup) {
 				continue
 			}
 
-			if startTime {
-				fmt.Println("============> Start Test <============")
-				startTime = false
-				start = time.Now()
-			}
-
 			node.QueryNodeDataInit()
 			node.MessagesPreprocess(node.messageClient.InsertOrDeleteMsg, timeRange)
 			//fmt.Println("MessagesPreprocess Done")
@@ -277,13 +277,6 @@ func (node *QueryNode) RunInsertDelete(wg *sync.WaitGroup) {
 			node.DoInsertAndDelete()
 			//fmt.Println("DoInsertAndDelete Done")
 			node.queryNodeTimeSync.UpdateSearchTimeSync(timeRange)
-
-			// Test insert time
-			if printFlag && node.msgCounter.InsertCounter >= CountMsgNum {
-				printFlag = false
-				timeSince := time.Since(start)
-				fmt.Println("============> Do", node.msgCounter.InsertCounter, "Insert in", timeSince, "<============")
-			}
 		}
 	}
 
@@ -589,7 +582,7 @@ func (node *QueryNode) Search(searchMessages []*msgPb.SearchMsg) msgPb.Status {
 				fmt.Println(err.Error())
 				return msgPb.Status{ErrorCode: 1}
 			}
-
+			fmt.Println(res.ResultIds)
 			for i := 0; i < len(res.ResultIds); i++ {
 				resultsTmp = append(resultsTmp, SearchResultTmp{ResultId: res.ResultIds[i], ResultDistance: res.ResultDistances[i]})
 			}
diff --git a/reader/read_node/reader.go b/reader/read_node/reader.go
index f9c9927dd5..2b0d596d63 100644
--- a/reader/read_node/reader.go
+++ b/reader/read_node/reader.go
@@ -3,7 +3,6 @@ package reader
 import (
 	"context"
 	"github.com/czs007/suvlim/reader/message_client"
-	"log"
 	"sync"
 )
 
@@ -16,17 +15,11 @@ func StartQueryNode(pulsarURL string) {
 	ctx := context.Background()
 
 	// Segments Services
-	go qn.SegmentManagementService()
+	//go qn.SegmentManagementService()
 	go qn.SegmentStatisticService()
 
 	wg := sync.WaitGroup{}
-	err := qn.InitFromMeta()
-
-	if err != nil {
-		log.Printf("Init query node from meta failed")
-		return
-	}
-
+	qn.InitFromMeta()
 	wg.Add(3)
 	go qn.RunMetaService(ctx, &wg)
 	go qn.RunInsertDelete(&wg)
diff --git a/reader/read_node/segment.go b/reader/read_node/segment.go
index 1dac55875c..8c452686b3 100644
--- a/reader/read_node/segment.go
+++ b/reader/read_node/segment.go
@@ -73,8 +73,6 @@ func (s *Segment) CloseSegment(collection* Collection) error {
 	int
 	Close(CSegmentBase c_segment);
 	*/
-	fmt.Println("Closing segment :", s.SegmentId)
-
 	var status = C.Close(s.SegmentPtr)
 	s.SegmentStatus = SegmentClosed
 
@@ -84,13 +82,11 @@ func (s *Segment) CloseSegment(collection* Collection) error {
 
 	// Build index after closing segment
 	s.SegmentStatus = SegmentIndexing
-	fmt.Println("Building index...")
 	s.buildIndex(collection)
 
 	// TODO: remove redundant segment indexed status
 	// Change segment status to indexed
 	s.SegmentStatus = SegmentIndexed
-	fmt.Println("Segment closed and indexed")
 
 	return nil
 }
diff --git a/reader/read_node/segment_service.go b/reader/read_node/segment_service.go
index ea821a04fb..37bf33665c 100644
--- a/reader/read_node/segment_service.go
+++ b/reader/read_node/segment_service.go
@@ -13,19 +13,20 @@ func (node *QueryNode) SegmentsManagement() {
 	//node.queryNodeTimeSync.UpdateTSOTimeSync()
 	//var timeNow = node.queryNodeTimeSync.TSOTimeSync
 
-	timeNow := node.messageClient.GetTimeNow() >> 18
+	timeNow := node.messageClient.GetTimeNow()
 
 	for _, collection := range node.Collections {
 		for _, partition := range collection.Partitions {
-			for _, segment := range partition.Segments {
-				if segment.SegmentStatus != SegmentOpened {
-					log.Println("Segment have been closed")
-					continue
-				}
-
-				fmt.Println("timeNow = ", timeNow, "SegmentCloseTime = ", segment.SegmentCloseTime)
-				if timeNow >= segment.SegmentCloseTime {
-					go segment.CloseSegment(collection)
+			for _, oldSegment := range partition.OpenedSegments {
+				// TODO: check segment status
+				if timeNow >= oldSegment.SegmentCloseTime {
+					// close old segment and move it into partition.ClosedSegments
+					if oldSegment.SegmentStatus != SegmentOpened {
+						log.Println("Never reach here, Opened segment cannot be closed")
+						continue
+					}
+					go oldSegment.CloseSegment(collection)
+					partition.ClosedSegments = append(partition.ClosedSegments, oldSegment)
 				}
 			}
 		}
@@ -33,7 +34,7 @@ func (node *QueryNode) SegmentsManagement() {
 }
 
 func (node *QueryNode) SegmentManagementService() {
-	sleepMillisecondTime := 3000
+	sleepMillisecondTime := 1000
 	fmt.Println("do segments management in ", strconv.Itoa(sleepMillisecondTime), "ms")
 	for {
 		time.Sleep(time.Duration(sleepMillisecondTime) * time.Millisecond)
@@ -80,8 +81,6 @@ func (node *QueryNode) SegmentStatistic(sleepMillisecondTime int) {
 		statisticData = append(statisticData, stat)
 	}
 
-	fmt.Println("Publish segment statistic")
-	fmt.Println(statisticData)
 	var status = node.PublicStatistic(&statisticData)
 	if status.ErrorCode != msgPb.ErrorCode_SUCCESS {
 		log.Printf("Publish segments statistic failed")
@@ -89,7 +88,7 @@ func (node *QueryNode) SegmentStatistic(sleepMillisecondTime int) {
 }
 
 func (node *QueryNode) SegmentStatisticService() {
-	sleepMillisecondTime := 3000
+	sleepMillisecondTime := 1000
 	fmt.Println("do segments statistic in ", strconv.Itoa(sleepMillisecondTime), "ms")
 	for {
 		time.Sleep(time.Duration(sleepMillisecondTime) * time.Millisecond)
diff --git a/sdk/examples/simple/insert.cpp b/sdk/examples/simple/insert.cpp
index 5971b4c27c..1fe54e449d 100644
--- a/sdk/examples/simple/insert.cpp
+++ b/sdk/examples/simple/insert.cpp
@@ -21,7 +21,7 @@
 #include "interface/ConnectionImpl.h"
 #include "utils/TimeRecorder.h"
 
-const int N = 200000;
+const int N = 100;
 const int DIM = 16;
 const int LOOP = 10;
 
diff --git a/storage/internal/tikv/tikv_store.go b/storage/internal/tikv/tikv_store.go
index 84df3eecc8..902b63e84c 100644
--- a/storage/internal/tikv/tikv_store.go
+++ b/storage/internal/tikv/tikv_store.go
@@ -3,7 +3,6 @@ package tikv_driver
 import (
 	"context"
 	"errors"
-	"github.com/czs007/suvlim/conf"
 	. "github.com/czs007/suvlim/storage/internal/tikv/codec"
 	. "github.com/czs007/suvlim/storage/pkg/types"
 	"github.com/tikv/client-go/config"
@@ -87,8 +86,7 @@ type TikvStore struct {
 }
 
 func NewTikvStore(ctx context.Context) (*TikvStore, error) {
-	var pdAddress0 = conf.Config.Storage.Address + ":" + strconv.FormatInt(int64(conf.Config.Storage.Port), 10)
-	pdAddrs := []string{pdAddress0}
+	pdAddrs := []string{"127.0.0.1:2379"}
 	conf := config.Default()
 	client, err := rawkv.NewClient(ctx, pdAddrs, conf)
 	if err != nil {
diff --git a/writer/main.go b/writer/main.go
index f862775c8d..0074fae5de 100644
--- a/writer/main.go
+++ b/writer/main.go
@@ -32,48 +32,35 @@ func main() {
 		log.Fatal(err)
 	}
 
-	msgCounter := write_node.MsgCounter{
-		InsertCounter: 0,
-		DeleteCounter: 0,
-	}
-
 	wn := write_node.WriteNode{
 		KvStore:       &kv,
 		MessageClient: &mc,
 		TimeSync:      100,
-		MsgCounter:    &msgCounter,
 	}
 
 	const Debug = true
 	const CountMsgNum = 1000 * 1000
 
 	if Debug {
+		var start = time.Now()
 		var printFlag = true
-		var startTime = true
-		var start time.Time
 
 		for {
-			if ctx.Err() != nil {
-				break
-			}
-			msgLength := wn.MessageClient.PrepareBatchMsg()
-			if msgLength > 0 {
-				if startTime {
-					fmt.Println("============> Start Test <============")
-					startTime = false
-					start = time.Now()
-				}
-
-				wn.DoWriteNode(ctx, &wg)
-				fmt.Println("write node do a batch message, storage len: ", msgLength)
-			}
-
 			// Test insert time
 			if printFlag && wn.MsgCounter.InsertCounter >= CountMsgNum {
 				printFlag = false
 				timeSince := time.Since(start)
 				fmt.Println("============> Do", wn.MsgCounter.InsertCounter, "Insert in", timeSince, "<============")
 			}
+
+			if ctx.Err() != nil {
+				break
+			}
+			msgLength := wn.MessageClient.PrepareBatchMsg()
+			if msgLength > 0 {
+				wn.DoWriteNode(ctx, &wg)
+				fmt.Println("write node do a batch message, storage len: ", msgLength)
+			}
 		}
 	}