Ashutosh Bapat <ashutosh.bapat....@gmail.com> writes: > On Fri, Jul 12, 2024 at 11:59 AM Ashutosh Bapat > <ashutosh.bapat....@gmail.com> wrote: >> >> > Out of curiosity, I measured the performance with just the "unlikely" > change and with the full patch. Below are the results > Testing with 1000000 partitions ... > latency average = 333.538 ms > > with just unlikely change > Testing with 1000000 partitions .. > Testing with 1 partitions > > There's noticeable change across all the number of partitions with > just "unlikely" change.
I'm curious about why a 'unlikey' change can cause noticeable change, especially there is just one function call in the 'if-statement' (I am thinking more instrucments in the if-statement body, more changes it can cause). + if (unlikely(winstate->buffer == NULL)) + prepare_tuplestore(winstate); -- Best Regards Andy Fan
