Re: Parallel Seq Scan
От | Amit Langote |
---|---|
Тема | Re: Parallel Seq Scan |
Дата | |
Msg-id | CA+HiwqFidHx4KoRJW_ipKegPwSnGgh01uXC9mksTogTGaVJtEA@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: Parallel Seq Scan (Robert Haas <robertmhaas@gmail.com>) |
Список | pgsql-hackers |
On Wed, Nov 11, 2015 at 11:53 PM, Robert Haas <robertmhaas@gmail.com> wrote: > For those following along at home, here's a demo: > > rhaas=# \timing > Timing is on. > rhaas=# select * from pgbench_accounts where filler like '%a%'; > aid | bid | abalance | filler > -----+-----+----------+-------- > (0 rows) > > Time: 743.061 ms > rhaas=# set max_parallel_degree = 4; > SET > Time: 0.270 ms > rhaas=# select * from pgbench_accounts where filler like '%a%'; > aid | bid | abalance | filler > -----+-----+----------+-------- > (0 rows) > > Time: 213.412 ms > > This is all pretty primitive at this point - there are still lots of > things that need to be fixed and improved, and it applies to only the > very simplest cases at present, but, hey, parallel query. Check it > out. Yay! Great work guys! Thanks, Amit
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