XinyuZeng commented on PR #1158:
URL: https://github.com/apache/orc/pull/1158#issuecomment-1200964837

   @dongjoon-hyun I created jira-issue 1232 for this problem. Also, even the 
metrics is disabled by setting nullptr, there is still some cost of initing the 
AutoStopWatch object and destructing it. The following perf flamegraph shows 
the cost.
   
![image](https://user-images.githubusercontent.com/30414224/182120492-94f85aa2-90b2-4995-b9f5-b1e452684d40.png)


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