On Fri, 25 Apr 2025 at 01:32, Marc Millas <marc.millas@mokadb.com> wrote: > Nested Loop Left Join (cost=941400.77..966327.57 rows=3 width=653) (actual time=52655.694..62533.811 rows=346 loops=1) > Buffers: shared hit=10068265 read=396705 dirtied=1858 written=218, temp read=429687 written=115187 > I/O Timings: read=79368.246 write=11.486 > > So, the total execution time is 52655 ms ok > and the total time for i/o is...79368 ms > > how ???
The 79.3 seconds is the total time spent doing reads for all parallel workers. 52.6 seconds is the wall clock time elapsed to execute the query.
