Re: [Xen-users] performance of pv drivers for windows

[Alexander Piavlo <piavka@xxxxxxxxxxxx>]

Sebastian Reitenbach wrote:
> Hello everybody,
>
> I tried to measure the performance of the available drivers for windows as a 
> HVM guest.
> I used the gplpv drivers 0.9.11-pre17, the PV drivers from Novell, and the 
> drivers 
> from Citrix XenSource with the XenServer 5.
> The Novell and gplpv drivers were more or less at the same speed, for both, 
> network and disk performance.
> The disk performance was about 10MB/s reading and writing sequentially, and 
> about 1-1.5MB/s for reading and writing randomly.
> The network speed was about 10-12MB/s, via a GigaBit line.
>
> The Xensource drivers made at least about 30MB/s reading and writing 
> sequentially, but for reading and writing randomly, it was also only lousy 
> 1.5MB/s.
>   
1.5MB/s for random write access is not lousy , if you perform random 
write test in dom0 or on native non xen kernel
you'll also get  1.5MB/s
> Via network, over the GigaBit line, with the xensource drivers, the speed was 
> about 78 MB/s.
> The Windows system was a XP SP2.
> hdparm on the dom0 gives about 60MB/s.
> The network test was an ftp transfer, just downloading a 500MB file, without 
> writing it to disk, writing to nul. The same in the dom0, writing the file 
> to /dev/null gave me 112MB/s.
> So I am wondering, what are the expected speed gains for the gplpv drivers?
> Is the performance of the drivers bettter with different windows versions, 
> e.g. windows server 2003?
> kind regards
> Sebastian
>
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> http://lists.xensource.com/xen-users
>   

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