Re: COMMIT NOWAIT Performance Option
| От | Jim C. Nasby |
|---|---|
| Тема | Re: COMMIT NOWAIT Performance Option |
| Дата | |
| Msg-id | 20070228002104.GA62448@nasby.net обсуждение |
| Ответ на | Re: COMMIT NOWAIT Performance Option (Bruce Momjian <bruce@momjian.us>) |
| Список | pgsql-hackers |
On Tue, Feb 27, 2007 at 07:17:37PM -0500, Bruce Momjian wrote: > > Actually, I don't know that combining both settings is a wise move. The > > delay should still provide crash protection, whereas with fsync=off > > you've got absolutely no protection from anything. That's a huge > > difference, and one that IMHO warrants a separate setting (and a big, > > fat WARNING in the comment for that setting). > > Yes, it needs a warning, or perhaps we just tell people to set it to > something high and that is all they can do. Before doing that I'd want to see how the performance compares to fsync=off. My guess is that fsync=off is a big gain during checkpoints. -- Jim Nasby jim@nasby.net EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)
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