diff --git a/rocketmq-store/src/consume_queue/mapped_file_queue.rs b/rocketmq-store/src/consume_queue/mapped_file_queue.rs
index e48f1046..769d4df5 100644
--- a/rocketmq-store/src/consume_queue/mapped_file_queue.rs
+++ b/rocketmq-store/src/consume_queue/mapped_file_queue.rs
@@ -18,7 +18,10 @@
 use std::{
     fs,
     path::{Path, PathBuf},
-    sync::Arc,
+    sync::{
+        atomic::{AtomicU64, Ordering},
+        Arc,
+    },
 };
 
 use log::warn;
@@ -42,11 +45,11 @@ pub struct MappedFileQueue {
     //  pub(crate) mapped_files: Vec<LocalMappedFile>,
     pub(crate) allocate_mapped_file_service: Option<AllocateMappedFileService>,
 
-    pub(crate) flushed_where: Arc<parking_lot::Mutex<u64>>,
+    pub(crate) flushed_where: Arc<AtomicU64>,
 
-    pub(crate) committed_where: Arc<parking_lot::Mutex<u64>>,
+    pub(crate) committed_where: Arc<AtomicU64>,
 
-    pub(crate) store_timestamp: Arc<parking_lot::Mutex<u64>>,
+    pub(crate) store_timestamp: Arc<AtomicU64>,
 }
 
 /*impl Swappable for MappedFileQueue {
@@ -75,9 +78,9 @@ impl MappedFileQueue {
             mapped_file_size,
             mapped_files: Vec::new(),
             allocate_mapped_file_service,
-            flushed_where: Arc::new(parking_lot::Mutex::new(0)),
-            committed_where: Arc::new(parking_lot::Mutex::new(0)),
-            store_timestamp: Arc::new(parking_lot::Mutex::new(0)),
+            flushed_where: Arc::new(AtomicU64::new(0)),
+            committed_where: Arc::new(AtomicU64::new(0)),
+            store_timestamp: Arc::new(AtomicU64::new(0)),
         }
     }
 
@@ -225,11 +228,13 @@ impl MappedFileQueue {
     }
 
     pub fn set_flushed_where(&mut self, flushed_where: i64) {
-        *self.flushed_where.lock() = flushed_where as u64;
+        self.flushed_where
+            .store(flushed_where as u64, Ordering::SeqCst);
     }
 
     pub fn set_committed_where(&mut self, committed_where: i64) {
-        *self.committed_where.lock() = committed_where as u64;
+        self.committed_where
+            .store(committed_where as u64, Ordering::SeqCst);
     }
 
     pub fn truncate_dirty_files(&mut self, offset: i64) {}