On Mon, 11 Apr 2022 at 22:11, John Naylor <john.nay...@enterprisedb.com> wrote: > > On Mon, Apr 11, 2022 at 5:34 AM David Rowley <dgrowle...@gmail.com> wrote: > > > With this particular test, v15 is about 15% *slower* than v14. I > > didn't know what to blame at first, so I tried commenting out the sort > > specialisations and got the results in the red bars in the graph. This > > made it about 7.5% *faster* than v14. So looks like this patch is to > > blame. I then hacked the comparator function that's used in the > > specialisations for BIGINT to comment out the tiebreak to remove the > > indirect function call, which happens to do nothing in this 1 column > > sort case. The aim here was to get an idea what the performance would > > be if there was a specialisation for single column sorts. That's the > > yellow bars, which show about 10% *faster* than master. > > Thanks for investigating! (I assume you meant 10% faster than v14?)
Yes, I did mean to say v14. (I'm too used to comparing everything to master) David
