Re: Freeze avoidance of very large table.
| От | Andres Freund |
|---|---|
| Тема | Re: Freeze avoidance of very large table. |
| Дата | |
| Msg-id | 20150421063937.GA14483@alap3.anarazel.de обсуждение исходный текст |
| Ответ на | Re: Freeze avoidance of very large table. (Bruce Momjian <bruce@momjian.us>) |
| Ответы |
Re: Freeze avoidance of very large table.
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| Список | pgsql-hackers |
On 2015-04-20 17:13:29 -0400, Bruce Momjian wrote: > Didn't you think any of the TODO threads had workable solutions? And > don't expect adding an additional file per relation will be zero cost > --- added over the lifetime of 200M transactions, I question if this > approach would be a win. Note that normally you'd not run with a 200M transaction freeze max age on a busy server. Rather around a magnitude more. Think about this being used on a time partionioned table. Right now all the partitions have to be fully rescanned on a regular basis - quite painful. With something like this normally only the newest partitions will have to be. Greetings, Andres Freund
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