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List:       xen-users
Subject:    RE: [Xen-users] Disk performance under Xen
From:       Jeff Sturm <jeff.sturm () eprize ! com>
Date:       2009-07-31 11:28:04
Message-ID: 64D0546C5EBBD147B75DE133D798665F02FDC621 () hugo ! eprize ! local
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> -----Original Message-----
> We get the same performance under windows but comparing the difference between
> the two it's easier to demonstrate with 2 x Linux systems. With regards to why we \
> use HVM, this is so we can do P2V migrations of various OS' into Xen.

For Linux, a HVM to PV migration shouldn't be a barrier.  Install a pv-ops capable \
kernel in your domU (or 2.6.18 Xen-patched kernel), adjust configs and restart the \
domU.

You can also stick with HVM, but why cripple things?  Wouldn't you rather have device \
hotplug, balloon and fast I/O?

For Windows you can install the GPLPV driver to avoid emulated I/O.  I don't know \
what options exist for any other OS.

Jeff



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