diff --git a/weed/command/filer_sync.go b/weed/command/filer_sync.go
index 326bd1fbe..172be6a9a 100644
--- a/weed/command/filer_sync.go
+++ b/weed/command/filer_sync.go
@@ -169,8 +169,11 @@ func doSubscribeFilerMetaChanges(clientId int32, grpcDialOption grpc.DialOption,
 		return persistEventFn(resp)
 	}
 
+	var lastLogTsNs = time.Now().Nanosecond()
 	processEventFnWithOffset := pb.AddOffsetFunc(processEventFn, 3*time.Second, func(counter int64, lastTsNs int64) error {
-		glog.V(0).Infof("sync %s to %s progressed to %v %0.2f/sec", sourceFiler, targetFiler, time.Unix(0, lastTsNs), float64(counter)/float64(3))
+		now := time.Now().Nanosecond()
+		glog.V(0).Infof("sync %s to %s progressed to %v %0.2f/sec", sourceFiler, targetFiler, time.Unix(0, lastTsNs), float64(counter)/(float64(now-lastLogTsNs)/1e9))
+		lastLogTsNs = now
 		return setOffset(grpcDialOption, targetFiler, SyncKeyPrefix, sourceFilerSignature, lastTsNs)
 	})
 
diff --git a/weed/pb/filer_pb_tail.go b/weed/pb/filer_pb_tail.go
index 1afddc725..16c7bc8f4 100644
--- a/weed/pb/filer_pb_tail.go
+++ b/weed/pb/filer_pb_tail.go
@@ -84,11 +84,11 @@ func AddOffsetFunc(processEventFn ProcessMetadataFunc, offsetInterval time.Durat
 		}
 		counter++
 		if lastWriteTime.Add(offsetInterval).Before(time.Now()) {
-			counter = 0
 			lastWriteTime = time.Now()
 			if err := offsetFunc(counter, resp.TsNs); err != nil {
 				return err
 			}
+			counter = 0
 		}
 		return nil
 	}