Re: explain
| От | Marc Millas |
|---|---|
| Тема | Re: explain |
| Дата | |
| Msg-id | CADX_1aZ3b_XKt31NWjpxV7BUyh2poCERiRZ85UGJ=2+6aTKrbQ@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: explain (David Rowley <dgrowleyml@gmail.com>) |
| Список | pgsql-general |
On Thu, Apr 24, 2025 at 3:41 PM David Rowley <dgrowleyml@gmail.com> wrote:
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.
David
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