Commits on May 25, 2024

1. Add TCP_NODELAY option to improve performance for large response queries …

   This commit adds the TCP_NODELAY option to the socket configuration in
   `configure_socket` function. Without this option, we observed significant
   performance issues when executing SELECT queries with large responses.
   
   Before the fix:
   postgres=> SELECT repeat('a', 1); SELECT repeat('a', 8153);
   Time: 1.368 ms
   Time: 41.364 ms
   
   After the fix:
   postgres=> SELECT repeat('a', 1); SELECT repeat('a', 8153);
   Time: 1.332 ms
   Time: 1.528 ms
   
   By setting TCP_NODELAY, we eliminate the Nagle's algorithm delay, which
   results in a substantial improvement in response times for large queries.
   
   This problem was discussed in postgresml#616.

   

   zsand committed May 25, 2024
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