On Mon, Dec 5, 2016 at 7:49 PM, Andres Freund <and...@anarazel.de> wrote: > I tried to address 2) by changing the C implementation. That brings some > measurable speedups, but it's not huge. A bigger speedup is making > slot_getattr, slot_getsomeattrs, slot_getallattrs very trivial wrappers; > but it's still not huge. Finally I turned to just-in-time (JIT) > compiling the code for tuple deforming. That doesn't save the cost of > 1), but it gets rid of most of 2) (from ~15% to ~3% in TPCH-Q01). The > first part is done in 0008, the JITing in 0012.
A more complete motivating example would be nice. For example, it would be nice to see the overall speedup for some particular TPC-H query. -- Peter Geoghegan -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
