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RE: Re[Xen-users] lease 0.9.9 of GPL PV Drivers for Windows


  • To: "Antolien Hetzel" <a.hetzel@xxxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
  • From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
  • Date: Mon, 16 Jun 2008 22:57:52 +1000
  • Delivery-date: Mon, 16 Jun 2008 05:58:34 -0700
  • List-id: Xen user discussion <xen-users.lists.xensource.com>
  • Thread-index: AcjPreTASR/5/Z3CQ2CXGoAlCG8I7gAApcvA
  • Thread-topic: Re[Xen-users] lease 0.9.9 of GPL PV Drivers for Windows

> James Harper wrote:
> >
> > You need to tell me what tool you are using to measure performance.
> >
> > James
> >
> 
> Yes, i'm using bench32 (ATTO Disk Benchmark), this result is for a
1024 to
> 4096KB with 32MB total length (Direct I/O and Overlapped I/O, queue
depth
> 4)
> 

I haven't tested that one. The poor performance may be due to unaligned
buffers. Could you please try testing with iometer and compare the pv
drivers vs the qemu drivers?

Thanks

James

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