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Re: [Xen-API] XCP 1.5 eta

On Fri, Jan 06, 2012 at 11:44:25AM +0400, George Shuklin wrote:
> We running cloud on XCP, I can say, that cpu performance is
> negligible factor for current hypervisors state. The main problem
> starts around network and disk performance, and balance of
> features/speed of them.
> Our virtual machines boots within this time (10s and less) and I
> can't say this is somehow critical question. More important is, f.e.
> footprint on dom0 for network performance. I somehow unhappy of XCP
> performance - I getting only 5-7GiB/s with about 100% load of one
> dom0 vCPUs. I've prefer to see something around 8-9GiB/s with much

Does it change if you make dom0 have more vCPUs?
> lower load, but not sure if any other system with bridge level
> aggregation and live migration could perform better.
> Same for disk IO - XCP do have relatively slow ISCSI, performing
> only around 300-500MB/s (instead expected over 1GB/s), but, again, I
> saw nothing better right now.

1GB being what you saw on baremetal? Or is that what your line speed is?

> One problem with 'slow XCP' may be within HVM - which is lame mode
> for lame windows-based appliances.

Are you using the PV drivers in your HVM guest?

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