Re: FreeBSD Softupdates??

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От Larry Rosenman
Тема Re: FreeBSD Softupdates??
Дата
Msg-id 20001004122036.A25985@lerami.lerctr.org
обсуждение исходный текст
Ответ на Re: FreeBSD Softupdates??  (The Hermit Hacker <scrappy@hub.org>)
Список pgsql-general
The consensu from the FreeBSD -STABLE lists are that SOFTUPDATES helps
ANY UFS FileSystem, and makes  it MORE robust because of the logging
and the way FSCK works.

I've turned SOFTUPDATES on all my FS's on 4.1.1-STABLE.

Larry

* The Hermit Hacker <scrappy@hub.org> [000926 10:32]:
>
> I've been runing since softupdates became mainstream, on a relatively
> heavily used production server ... I can't answer about performance
> gains/loss, but from what I know of softupdates, it should be neglible for
> a database system ... but, I haven't been 'shot in the foot' yet for any
> of our database ...
>
>
> On Tue, 26 Sep 2000, Neil Conway wrote:
>
> > 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.
> >
> > HTH,
> >
> > Neil
> >
> > --
> > Neil Conway <neilconway@home.com>
> > Get my GnuPG key from: http://klamath.dyndns.org/mykey.asc
> > Encrypted mail welcomed
> >
> > I am not interested in the past. I am interested in the future for
> > that is where I intend to spend the rest of my life.
> >         -- Charles F. Ketterring
> >
>
> Marc G. Fournier                   ICQ#7615664               IRC Nick: Scrappy
> Systems Administrator @ hub.org
> primary: scrappy@hub.org           secondary: scrappy@{freebsd|postgresql}.org

--
Larry Rosenman                      http://www.lerctr.org/~ler
Phone: +1 972-414-9812 (voice) Internet: ler@lerctr.org
US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749

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