[16321] in Kerberos_V5_Development
Re: KDC worker processes project
daemon@ATHENA.MIT.EDU (Roland C. Dowdeswell)
Thu Sep 16 17:14:36 2010
Date: Thu, 16 Sep 2010 22:15:13 +0100
From: "Roland C. Dowdeswell" <elric@imrryr.org>
To: Greg Hudson <ghudson@mit.edu>
Message-ID: <20100916211513.GB4857@mournblade.imrryr.org>
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Cc: "krbdev@mit.edu" <krbdev@mit.edu>,
Nicolas Williams <nicolas.williams@oracle.com>
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On Thu, Sep 16, 2010 at 05:06:01PM -0400, Greg Hudson wrote:
>
> > How will the number of processes be configured? What's the default?
> > (Twice the number of CPUs seems like a reasonable default to me.)
>
> With the -w command line option to krb5kdc. Getting it from the profile
> wouldn't be too difficult if that's important.
>
> The default is not to use worker processes. If you don't have KDC load
> issues and anything goes wrong, you're going to have an easier time
> diagnosing it if the KDC didn't aggressively parallelize in order to
> take advantage of system resources.
This makes sense. Our KDCs use KDB and have no performance issues
whatsoever even though we have a respectably large plant.
We did, however, use up -w for ``inetd wait mode'' which I submited
as a patch a while back. We find this feature quite useful as it
allows us to use xinetd's features to start different KDCs on
different ports and IP addresses with different configurations.
--
Roland Dowdeswell http://Imrryr.ORG/~elric/
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