MiniSho opened a new pull request, #10913:
URL: https://github.com/apache/iotdb/pull/10913

   ## Description
   As you can see from the graph, WAL's serialization and deserialization 
consume a lot of CPU, about 25%, which becomes the focus of our optimization 
attention.
   <img width="1713" alt="image" 
src="https://github.com/apache/iotdb/assets/42286868/e45d0d1b-0702-4c4e-8d8e-34b0a2e61e40";>
   
   ## Solution
   We perform the following optimizations for log mode:
   * When no pattern is set, i.e., the extractor's default pattern is used, we 
don't need to serialize and deserialize the WAL, but instead transfer the read 
binary data directly to the receiver
   * Expansion of allocated memory


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