Hi, On Thu, Jul 28, 2022 at 02:28:23PM -0700, Jacob Champion wrote: > > = Stalled Patches, Need Help = > [...] > - Add extra statistics to explain for Nested Loop > https://commitfest.postgresql.org/38/2765/ > > I think the author is hoping for help with testing and performance > characterization.
As I mentioned in [1], this patch breaks the current assumption that INSTRUMENT_ALL will lead to statement-level metrics that are generally useful. According to the benchmark, the proposed patch would add a 1.5% overhead for pg_stat_statements or any other similar extension that relies on INSTRUMENT_ALL for no additional information, and I don't think it's acceptable. I'm still not sure of what is the best way to fix that, but clearly something has to be done, ideally without requiring every single pg_stat_statements-like extension to be modified. > The following are actively being worked and I expect to move them to > next CF: > > - session variables, LET command Yes please.
