[ovs-dev] [GIT PULL v2] Open vSwitch
Fischer, Anna
anna.fischer at hp.com
Mon Nov 28 18:52:31 UTC 2011
> Subject: Re: [ovs-dev] [GIT PULL v2] Open vSwitch
>
> On Mon, Nov 28, 2011 at 01:54:16PM +0000, Fischer, Anna wrote:
> > Yes, I mentioned this months ago, and I am surprised this critical
> > issue has never been picked up on and addressed. With a flaw like
> this
> > there is no chance this component can be used in any serious
> > virtualization deployment where different customers share the same
> > physical server.
>
> It was addressed, by introducing additional queues and using them in
> userspace.
>
> This is documented in NEWS:
>
> - Flow setups are now processed in a round-robin manner across
> ports
> to prevent any single client from monopolizing the CPU and
> conducting
> a denial of service attack.
OK, that addresses my point, thanks. Ideally there should be smarter or more flexible algorithms than just a round robin scheduler, but it is a start.
Anna
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