Re: Page Checksums
От | Jeff Davis |
---|---|
Тема | Re: Page Checksums |
Дата | |
Msg-id | 1325011176.14697.32.camel@jdavis обсуждение исходный текст |
Ответ на | Re: Page Checksums (Robert Haas <robertmhaas@gmail.com>) |
Ответы |
Re: Page Checksums
|
Список | pgsql-hackers |
On Mon, 2011-12-19 at 07:50 -0500, Robert Haas wrote: > I > think it would be regrettable if everyone had to give up 4 bytes per > page because some people want checksums. I can understand that some people might not want the CPU expense of calculating CRCs; or the upgrade expense to convert to new pages; but do you think 4 bytes out of 8192 is a real concern? (Aside: it would be MAXALIGNed anyway, so probably more like 8 bytes.) I was thinking we'd go in the other direction: expanding the header would take so much effort, why not expand it a little more to give some breathing room for the future? Regards,Jeff Davis
В списке pgsql-hackers по дате отправления: