Re: Free Cache Memory (Linux) and Postgresql

Поиск
Список
Период
Сортировка
От Martijn van Oosterhout
Тема Re: Free Cache Memory (Linux) and Postgresql
Дата
Msg-id 20080930220232.GA16909@svana.org
обсуждение исходный текст
Ответ на Re: Free Cache Memory (Linux) and Postgresql  (Denis Gasparin <denis@edistar.com>)
Ответы Re: Free Cache Memory (Linux) and Postgresql  ("Scott Marlowe" <scott.marlowe@gmail.com>)
Список pgsql-general
On Tue, Sep 30, 2008 at 03:51:44PM +0200, Denis Gasparin wrote:
> It seems like postgres or the operating system (linux) is keeping in
> cache that old data even if it has been deleted.

Just remember: "free memory" is "memory you paid for and are not
using" == "wasted memory". The OS knows damn well it's not important
and will throw it out if necessary, but it costs nothing to keep it.

Have a nice day,
--
Martijn van Oosterhout   <kleptog@svana.org>   http://svana.org/kleptog/
> Please line up in a tree and maintain the heap invariant while
> boarding. Thank you for flying nlogn airlines.

Вложения

В списке pgsql-general по дате отправления:

Предыдущее
От: "Scott Marlowe"
Дата:
Сообщение: Re: Why Does UPDATE Take So Long?
Следующее
От: Alan Hodgson
Дата:
Сообщение: Re: Why Does UPDATE Take So Long?