Re: db size
От | Adrian Moisey |
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Тема | Re: db size |
Дата | |
Msg-id | 48070DC3.1040709@careerjunction.co.za обсуждение исходный текст |
Ответ на | Re: db size (Richard Huxton <dev@archonet.com>) |
Ответы |
Re: db size
|
Список | pgsql-performance |
Hi >> INFO: "blahxxx": scanned 27 of 27 pages, containing 1272 live rows >> and 0 dead rows; 1272 rows in sample, 1272 estimated total rows > > This is a small table that takes up 27 pages and it scanned all of them. > You have 1272 rows in it and none of them are dead (i.e. deleted/updated > but still taking up space). I had a look through a few other tables...: INFO: "table1": scanned 22988 of 22988 pages, containing 2713446 live rows and 895662 dead rows; 45000 rows in sample, 2713446 estimate d total rows INFO: "table2": scanned 24600 of 24600 pages, containing 270585 live rows and 65524 dead rows; 45000 rows in sample, 270585 estimated total rows Is that dead rows an issue? Should I try clean it out? Will it improve performance ? -- Adrian Moisey Systems Administrator | CareerJunction | Your Future Starts Here. Web: www.careerjunction.co.za | Email: adrian@careerjunction.co.za Phone: +27 21 686 6820 | Mobile: +27 82 858 7830 | Fax: +27 21 686 6842
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