Re: Freeze avoidance of very large table.

Поиск
Список
Период
Сортировка
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.  (Bruce Momjian <bruce@momjian.us>)
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



В списке pgsql-hackers по дате отправления:

Предыдущее
От: Etsuro Fujita
Дата:
Сообщение: Re: Optimization for updating foreign tables in Postgres FDW
Следующее
От: Michael Paquier
Дата:
Сообщение: Re: Streaming replication and WAL archive interactions