Re: Surprising dead_tuple_count from pgstattuple
| От | Simon Riggs |
|---|---|
| Тема | Re: Surprising dead_tuple_count from pgstattuple |
| Дата | |
| Msg-id | 1281376228.2142.1232.camel@ebony обсуждение исходный текст |
| Ответ на | Re: Surprising dead_tuple_count from pgstattuple (Gordon Shannon <gordo169@gmail.com>) |
| Ответы |
Re: Surprising dead_tuple_count from pgstattuple
Re: Surprising dead_tuple_count from pgstattuple |
| Список | pgsql-hackers |
On Sat, 2010-08-07 at 16:11 -0700, Gordon Shannon wrote: > So, I guess my real question here is, what happened to the "missing" > 100 items? If it was HOT prune, can anyone summarize what that does? Itagaki already explained that the second DELETE would have removed the 100 dead rows you consider to be missing. Any SQL statement that reads a block can do HOT pruning, if the block is otherwise unlocked. -- Simon Riggs www.2ndQuadrant.comPostgreSQL Development, 24x7 Support, Training and Services
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