On Wed, Aug 13, 2014 at 09:58:09PM +0530, Monica Gawas wrote:
> Ben Flaff : "What do you see as the most important deficiency?"
>
> Being quite the beginners in this stuff, we found some very basic 
> deficiencies like :
> 1.     QoS implementations in ovs only support a simple rate limiting , 
> rather than intelligent QoS with a minimum bandwidth
>         guarantee. With rate limiting, each queue is assigned a specific 
> amount of bandwidth that cannot be exceeded. But what if  
>         the queue is being under-utilized ?
> 2.     Uncontrolled incoming traffic at the device, to a VM that is sharing a 
> network device, can severely impact the performance of
>         other VMs because the decision to drop an incoming packet is taken 
> after the device has received the packet. This could 
>         potentially cause a denial of service attack on the VMs sharing the 
> device.

OVS (on Linux) uses Linux kernel provided QoS.  It sounds like you want
to develop new Linux queuing disciplines.  That's nice, but it's not
really OVS development--the only code you'd need in OVS is code to
configure the kernel support for whatever queuing discipline you build.
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