hotaery commented on issue #1383:
URL: https://github.com/apache/incubator-brpc/issues/1383#issuecomment-823289692


   
https://github.com/apache/incubator-brpc/blob/master/src/bvar/detail/sampler.cpp#L189
   here is code. brpc has sampling thread. if your project register too many 
bvar, this thread will consume more time than threshold so that print this log. 
   ```cpp
   bvar::Adder adder("example");
   ```
   maybe your project use bvar like this. Normally, it not affect performance. 
But i suggest don't use too many named bvar :)


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