Re: [Xen-users] Release 0.8.0 of GPL PV Drivers for Windows

[Stefan de Konink <skinkie@xxxxxxxxx>]

James Harper schreef:
> > I think this shall be using paravirtual drivers, so no vt-d stuff or
> > pciback kind of trick. James, could you confirm?
> Correct. Read Jun's posts.
>
> > Some additional questions:
> I assume these questions are all about pvSCSI.
>
> > - Can we say this is "faster" than the other SCSI paravirtual driver?
> In theory, if you have a backend device which is SCSI (eg a physical
> disk), and you want to map the whole disk through to a domU, then yes
> this could be faster as it is just a pipe to pass scsi commands through
> (mostly) unmodified. I haven't done any benchmarks, and the current cut
> of the xenscsi driver represents only a few days of 'spare time' work on
> my behalf (it's a heavily modified version of xenvbd), so there may be a
> few optimisations that could be made.
So iSCSI backends could have significant gain? With respect to the the 
other pv driver?

Stefan

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