diff --git a/category/get_perf_info.py b/category/get_perf_info.py
index ef357223616212c4529a0513f1ff3a92ad082276..a631303eb455b05ce6e435b0ebd3a61a2cf28223 100644
--- a/category/get_perf_info.py
+++ b/category/get_perf_info.py
@@ -452,6 +452,7 @@ class OffCPU():
             Logger().warning("当前内核版本下，工具暂不提供off-cpu采集功能.")
             return False
 
+    # offcpu main funciton
     @GlobalCall.monitor_info_thread_pool.threaded_pool
     def do_offcputime_collect(self):
         Logger().info("OffCPU数据采集开始")