swebb2066 commented on pull request #87:
URL: https://github.com/apache/logging-log4cxx/pull/87#issuecomment-1000882788


   Your data shows the rate of disabled log calls for multithread case which 
should be near the single thread rate for each thread.
   
   On Dec 25, 2021 1:38 AM, Robert Middleton ***@***.***> wrote:
   
   I'll have to take a look at that; I would be surprised if that was a 
significant source of performance issues, but some testing would confirm that.
   
   FWIW, using the LOG4CXX_[level]_FMT family of macros and also the fact that 
we use a thread_local for the thread 
name<https://github.com/apache/logging-log4cxx/commit/aaaea6aadf3fda0d2e0511d7034305cf1e8b9353>
 should more than compensate for the extra time locking the weak_ptr.
   
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