Re: Autocommit, isolation level, and vacuum behavior

Поиск
Список
Период
Сортировка
От Jack Orenstein
Тема Re: Autocommit, isolation level, and vacuum behavior
Дата
Msg-id 6B024CA6-8223-4971-B40E-2519C9D58AB4@hds.com
обсуждение исходный текст
Ответ на Re: Autocommit, isolation level, and vacuum behavior  (Tomasz Ostrowski <tometzky@batory.org.pl>)
Список pgsql-general
On Sep 13, 2008, at 4:39 AM, Tomasz Ostrowski wrote:

> On 2008-09-12 15:52, Jack Orenstein wrote:
>
>> Sorry, I misspoke. I have an index, but preferred doing a scan
>> without the index in this case.
>
> Why?
>
> The only reason I can think of is that you'd like to avoid disk
> seeking. But you get at most 1 row in 30 seconds, so disk latency
> (only several milliseconds) can be ignored.
>

Because other parts of our application consume results from the same
query at normal speed.

Jack

В списке pgsql-general по дате отправления:

Предыдущее
От: "Joshua D. Drake"
Дата:
Сообщение: Re: Restore filesystem backup
Следующее
От: "Martin Langhoff"
Дата:
Сообщение: Pg 8.3 tuning recommendations for embedded low-memory device (for OLPC :-) )