Re: LARGE single-system Cyrus installs?

From: Rob Banz (no email)
Date: Tue Nov 20 2007 - 16:01:20 EST

  • Next message: John Madden: "Re: LARGE single-system Cyrus installs?"

    On Nov 20, 2007, at 14:57, Pascal Gienger wrote:

    > Rob Banz <> wrote:
    >
    >>
    >> We went through a similar discussion last year in OpenAFS land, and
    >> came the same conclusion -- basically, if your filesystem is
    >> reasonably reliable (such as ZFS is), and you can trust your
    >> underlying storage not to lose transactions that are in-cache
    >> during a
    >> 'bad event', the added benefit of fsync() may be less than its
    >> performance cost.
    >
    > Would'nt it be nice to have a configuration option to completely
    > turn off fsync() in Cyrus? If you want, with a BIG WARNING in the
    > doc stating NOT TO USE IT unless you know what you doing. :)

    That's basically what we did with the AFS volserver & fileserver.
    Oddly, when the patch got integrated into the OpenAFS code, they
    didn't like the idea of it being an option and made it the default ;)

    ----
    Cyrus Home Page: http://cyrusimap.web.cmu.edu/
    Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki
    List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
    

  • Next message: John Madden: "Re: LARGE single-system Cyrus installs?"





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