can anyone point to the COPY FROM improvements mentioned that can result in up to 300% performance improvements is it the line in the release notes about "ASCII string detection"?
1. https://github.com/postgres/postgres/commit/3838fa269c15706d...
2. https://github.com/postgres/postgres/commit/121d2d3d70ecdb21...
It causes much less CPU overhead on the receiving side of a copy when receiving big JSON blobs.