On Thu, Feb 01, 2024 at 10:57:58AM +0900, Michael Paquier wrote: > And here are the results I get for text and binary (ms, average of 15 > queries after discarding the three highest and three lowest values): > test | master | v7 | v10 > -----------------+--------+------+------ > from_bin_1col | 1575 | 1546 | 1575 > from_bin_10col | 5364 | 5208 | 5230 > from_text_1col | 1690 | 1715 | 1684 > from_text_10col | 4875 | 4793 | 4757 > to_bin_1col | 1717 | 1730 | 1731 > to_bin_10col | 7728 | 7707 | 7513 > to_text_1col | 1710 | 1730 | 1698 > to_text_10col | 5998 | 5960 | 5987
Here are some numbers from a second local machine: test | master | v7 | v10 -----------------+--------+------+------ from_bin_1col | 508 | 467 | 461 from_bin_10col | 2192 | 2083 | 2098 from_text_1col | 510 | 499 | 517 from_text_10col | 1970 | 1678 | 1654 to_bin_1col | 575 | 577 | 573 to_bin_10col | 2680 | 2678 | 2722 to_text_1col | 516 | 506 | 527 to_text_10col | 2250 | 2245 | 2235 This is confirming a speedup with COPY FROM for both text and binary, with more impact with a larger number of attributes. That's harder to conclude about COPY TO in both cases, but at least I'm not seeing any regression even with some variance caused by what looks like noise. We need more numbers from more people. Sutou-san or Sawada-san, or any volunteers? -- Michael
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