diff --git a/sdk/remotecache/client.go b/sdk/remotecache/client.go
index 6fbe12ec6..c11c39a1c 100755
--- a/sdk/remotecache/client.go
+++ b/sdk/remotecache/client.go
@@ -186,7 +186,10 @@ func (rc *RemoteCacheClient) refreshWithRecover() (panicErr error) {
 	refreshLatency := time.NewTimer(0)
 	defer refreshLatency.Stop()
 
-	var err error
+	var (
+		err    error
+		notNew bool
+	)
 	for {
 		select {
 		case <-rc.stopC:
@@ -199,8 +202,12 @@ func (rc *RemoteCacheClient) refreshWithRecover() (panicErr error) {
 				}
 			}
 		case <-refreshLatency.C:
-			if err = rc.UpdateFlashGroups(); err != nil {
-				log.LogErrorf("updateFlashGroups err: %v", err)
+			if notNew {
+				if err = rc.UpdateFlashGroups(); err != nil {
+					log.LogErrorf("updateFlashGroups err: %v", err)
+				}
+			} else {
+				notNew = true
 			}
 			rc.refreshHostLatency()
 			refreshLatency.Reset(RefreshHostLatencyInterval)
diff --git a/tool/remotecache-benchmark/main.go b/tool/remotecache-benchmark/main.go
index 669cbaa4a..8d9eef0c6 100644
--- a/tool/remotecache-benchmark/main.go
+++ b/tool/remotecache-benchmark/main.go
@@ -25,6 +25,7 @@ import (
 	"github.com/cubefs/cubefs/tool/remotecache-benchmark/storage"
 	"github.com/cubefs/cubefs/util"
 	"github.com/cubefs/cubefs/util/bytespool"
+	"github.com/cubefs/cubefs/util/stat"
 	"github.com/google/uuid"
 )
 
@@ -91,6 +92,10 @@ func NewBenchmarkTester(dataDir, hddBase, nvmeBase string, verify bool, master s
 		if err != nil {
 			fmt.Printf("\nCreate a remote cache Tester failed:%v\n", err)
 		}
+		_, err = stat.NewStatistic("/tmp/cfs", "remoteCacheClient", int64(stat.DefaultStatLogSize), stat.DefaultTimeOutUs, true)
+		if err != nil {
+			fmt.Printf("\nCreate a remote cache stat log failed:%v\n", err)
+		}
 	}
 
 	return tester
@@ -197,8 +202,8 @@ func ensureAbsolutePath(path string) string {
 func main() {
 	dataDir := flag.String("data", "./test_data", "Test data directory")
 	totalSizeGB := flag.Int("size", 100, "Total size of test data (GB)")
-	genConcurrency := flag.Int("gen-concurrency", runtime.NumCPU()*8, "Number of concurrent data generation processes")
-	concurrency := flag.Int("concurrency", runtime.NumCPU()*4, "Number of concurrent requests")
+	genConcurrency := flag.Int("gen-concurrency", util.Max(2, int(float64(runtime.NumCPU())*0.6)), "Number of concurrent data generation processes")
+	concurrency := flag.Int("concurrency", util.Max(2, int(float64(runtime.NumCPU())*0.6)), "Number of concurrent requests")
 	needGenerate := flag.Bool("need-generate", false, "Generate test data")
 	hddBase := flag.String("hdd", "", "HDD storage directory")
 	nvmeBase := flag.String("nvme", "", "NVME storage directory")
@@ -270,6 +275,7 @@ func (t *BenchmarkTester) Stop() {
 	if t.cacheStorage != nil {
 		t.cacheStorage.Stop()
 	}
+	stat.WriteStat()
 }
 
 func (t *BenchmarkTester) RunPutBenchmark(ctx context.Context, concurrency int) {