Re: Parallel Seq Scan
От | Joshua D. Drake |
---|---|
Тема | Re: Parallel Seq Scan |
Дата | |
Msg-id | 54C298F5.6040107@commandprompt.com обсуждение исходный текст |
Ответ на | Re: Parallel Seq Scan (Jim Nasby <Jim.Nasby@BlueTreble.com>) |
Ответы |
Re: Parallel Seq Scan
|
Список | pgsql-hackers |
On 01/23/2015 10:44 AM, Jim Nasby wrote: > number of workers especially at slightly higher worker count. > > Those fixed chunk numbers look pretty screwy. 2, 4 and 8 workers make no > difference, then suddenly 16 cuts times by 1/2 to 1/3? Then 32 cuts time > by another 1/2 to 1/3? cached? First couple of runs gets the relations into memory? JD -- Command Prompt, Inc. - http://www.commandprompt.com/ 503-667-4564 PostgreSQL Support, Training, Professional Services and Development High Availability, Oracle Conversion, @cmdpromptinc "If we send our children to Caesar for their education, we should not be surprised when they come back as Romans."
В списке pgsql-hackers по дате отправления: