[Xen-users] Re: I/O performance.

[Sven Köhler <skoehler@xxxxxx>]

> What performance penalty I should expect from the I/O under domU ?
> 
> Does it matter to the I/O if the CPU has hardware virtualization ?

Me, personally, would be interested in the performance in the case that
the DomU accesses a block device on the host though the "most optimized"
case - namely if the DomU is using the Xen frontend and the Xen backend
of the Dom0 to access the device.

There are many questions, like:
Does Xen allow the DomU to make multiple requests that are then queued
on the Dom0 or even passed to the lower level SCSI/SATA driver of the
Dom0? And so on ...

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