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RE: [Xen-users] Poor hard disk performance on xen-3/dom0

To: Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx>
Subject: RE: [Xen-users] Poor hard disk performance on xen-3/dom0
From: Tom Brown <tbrown@xxxxxxxxxxxxx>
Date: Fri, 30 Dec 2005 11:04:07 -0800 (PST)
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On Fri, 30 Dec 2005, Ian Pratt wrote:

> Compare the boot messages of vanilla vs. xen -- you're likely using a
> different driver.
> I know everyone always ignores me whenever I say this, but users really
> should be using the -xen kernel rather than -xen0/U. The latter two are
> just to make build times quicker for developers. The -xen kernel has way
> more drivers, though built as modules, so you'll need to make an initrd.

and building initrd's is a non trivial process... much simpler to put a
few entries into /dev/, build a xen0 kernel with the required drivers, and
take the initrd out of the picture...

(Maybe there are new tools that make initrd's simple, but the above is
valid for old farts/admins like me... it also has the advantage of
producing a config that I _understand_ and thus _trust_ .)


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