Add TCP_NODELAY option to improve performance for large response queries #749
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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.
levkk
approved these changes
May 26, 2024
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This commit adds the TCP_NODELAY option to the socket configuration in
configure_socketfunction. Without this option, we observed significant performance issues when executing SELECT queries with large responses.Before the fix:
After the fix:
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 #616.