Re: [Xen-users] Extending flow control into the vm

[Simon Hobson <linux@xxxxxxxxxxxxxxxx>]

bwang@xxxxxxxxxx wrote:

> We have a data source attached to eth1 that over subscribe the data 
> capacity of peth1.  Using pcap on all 4 location, we see that flow 
> control is correctly enforced on peth1 but goes no further.  Is 
> there a way to extend the flow control all the way into the vm onto 
> eth1?
This would be flow control, as in the hardware support at the 
ethernet link layer ?
I think that would not make sense in a virtual switch - there is no 
limit to available bandwidth on these links, and in theory no limit 
on available packet buffer.
Would enforcing flow rate limits via tc rules do the job ?

--
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
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