Shawyeok commented on issue #21442:
URL: https://github.com/apache/pulsar/issues/21442#issuecomment-1814780242

   In Pulsar internal, there are multiple topics that depend on the same thread 
for message writing (such as Netty's EventLoop and OrderedExecutor). If, for 
some reason, these threads encounter a performance bottleneck, such as the lock 
contention observed in this case, then even those topics not directly causing 
the lock contention will be affected, as long as they are also bound to these 
same threads.


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