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> On Tue, Sep 26, 2000 at 03:20:31AM -0700, Alfred Perlstein wrote:
> > It can cause problems because softupdates makes meta data changes
> > (in this case file creation/removal) asyncronously, the same actually
> > happens with most other logging filesystems that don't support
> > transactions.
>
> I've been running FreeBSD 4.1 with soft updates on my development box
> for a while now without any problems at all. Although it's not
> production so there's not a lot of load on PgSQL.
>
> I don't know if it hurts or hampers performance.
Good question. I can see soft updates improving performance because it
flushes meta-data writes all at once, rather than each time a file is
created/destroyed. I don't see any downside for PostgreSQL. The
default fsync() will still work, or at least it should. This is not the
same as mounting a volume as async.
--
Bruce Momjian | http://candle.pha.pa.us
pgman@candle.pha.pa.us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
