Re: Performance of pg_dump on PGSQL 8.0

Поиск
Список
Период
Сортировка
От Jim C. Nasby
Тема Re: Performance of pg_dump on PGSQL 8.0
Дата
Msg-id 20060614211343.GP34196@pervasive.com
обсуждение исходный текст
Ответ на Re: Performance of pg_dump on PGSQL 8.0  ("John Vincent" <pgsql-performance@lusis.org>)
Ответы Re: Performance of pg_dump on PGSQL 8.0  ("John Vincent" <pgsql-performance@lusis.org>)
Список pgsql-performance
On Wed, Jun 14, 2006 at 02:11:19PM -0400, John Vincent wrote:
> Out of curiosity, does anyone have any idea what the ratio of actual
> datasize to backup size is if I use the custom format with -Z 0 compression
> or the tar format?

-Z 0 should mean no compression.

Something you can try is piping the output of pg_dump to gzip/bzip2. On
some OSes, that will let you utilize 1 CPU for just the compression. If
you wanted to get even fancier, there is a parallelized version of bzip2
out there, which should let you use all your CPUs.

Or if you don't care about disk IO bandwidth, just compress after the
fact (though, that could just put you in a situation where pg_dump
becomes bandwidth constrained).
--
Jim C. Nasby, Sr. Engineering Consultant      jnasby@pervasive.com
Pervasive Software      http://pervasive.com    work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf       cell: 512-569-9461

В списке pgsql-performance по дате отправления:

Предыдущее
От: Scott Marlowe
Дата:
Сообщение: Re: Performance of pg_dump on PGSQL 8.0
Следующее
От: "John Vincent"
Дата:
Сообщение: Re: Performance of pg_dump on PGSQL 8.0