Re: performance degredation after upgrade from 9.6 to 12

Hey Jeff,Andrew,

I continued testing the 12version vs the 96 version and it seems that there is almost non diff and in some cases pg96 is faster than 12. I compared the content of pg_stat_statements after each test that I have done and it seems that the db time is almost the same and sometimes 96 is faster by 5%.

Any idea why there isnt any improvement even when I enabled the parallel params in 12 ?

I can add a few examples if needed..