Re: Inserts and bad performance
От | Ron |
---|---|
Тема | Re: Inserts and bad performance |
Дата | |
Msg-id | 19b129be-79c7-18ca-de3c-b6ca170e64cd@gmail.com обсуждение исходный текст |
Ответ на | Inserts and bad performance ("Godfrin, Philippe E" <Philippe.Godfrin@nov.com>) |
Ответы |
RE: [EXTERNAL] Re: Inserts and bad performance
|
Список | pgsql-general |
On 11/24/21 1:15 PM, Godfrin, Philippe E wrote:
IMNSHO, this is the worst possible approach. Drop everything except the unique index, and then (if possible) sort the input file by the unique key. That'll increase buffered IO; otherwise, you're bopping all around the filesystem.
Using a bulk loader if possible would increase speeds
[snip]@font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;}@font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;}@font-face {font-family:"Calibri Light"; panose-1:2 15 3 2 2 2 4 3 2 4;}@font-face {font-family:"Lucida Console"; panose-1:2 11 6 9 4 5 4 2 2 4;}p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; font-size:11.0pt; font-family:"Calibri",sans-serif;}span.EmailStyle19 {mso-style-type:personal-compose; font-family:"Calibri",sans-serif; color:windowtext;}.MsoChpDefault {mso-style-type:export-only; font-family:"Calibri",sans-serif;}div.WordSection1 {page:WordSection1;}
I dropped the unique index , rebuilt the other indexes and no change.
IMNSHO, this is the worst possible approach. Drop everything except the unique index, and then (if possible) sort the input file by the unique key. That'll increase buffered IO; otherwise, you're bopping all around the filesystem.
Using a bulk loader if possible would increase speeds
--
Angular momentum makes the world go 'round.
Angular momentum makes the world go 'round.
В списке pgsql-general по дате отправления: