RE: [Xen-devel] Bad read performance

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> I notice that domain 0 gives bad performance with disk I/O. Domain 0
> was given about 55MB RAM. With the same configuration, Linux on raw
> hardware gives far better performance. While a raw Linux OS gives a
> disk read throughput of around 20MB/sec (without any caching effects),
> dom0 (using the Xen.2.0.4 kernel with linux kernel 2.6.10) gives only
> about 2-3MB/sec throughput.
> 
> Any pointers to the reasons for this difference will be 
> greatly helpful. 

Your dom0 kernel probably does not have the proper driver for you disk
controller compiled in...

Ian


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