[openstack-dev] rxtx factor in instance types

Vishvananda Ishaya vishvananda at gmail.com
Thu Jan 31 02:32:34 UTC 2013

Hi phil,

It is used to generate the rxtx_cap in the network_info cache which is in turn used to generate qos params in xenapi in:


I don't believe it is used in the other drivers at all.

tr3buchet or _cerberus_ might be able to add a bit more detail


On Jan 30, 2013, at 1:43 PM, "Day, Phil" <philip.day at hp.com> wrote:

> Hi Folks,
> Can anyone point me to where the rxtx factor of an instance type is currently used in the code please ?
> I was thinking about the use case of having instance types which are differentiated by their network bandwidth, and how that could be accommodated in a scheduler filter and passed down to the virt layer for cgroup configuration, and the rxtx factor seems to be the obvious starting point – but I was struggling to see how its already used.
> Has anyone else looked at this as an issue ?
> Cheers,
> Phil
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