Hello Ben. Thank you for your help. Can you tell me what is the bottleneck in the Linux QoS configuration made by OVS? It is always about 65000 queues? Or depends on RAM capacity (or disk)?
Thank you and my best regards, Daniel 2015-05-28 16:17 GMT+01:00 Ben Pfaff <[email protected]>: > On Wed, May 27, 2015 at 04:10:45PM +0100, Daniel Caixinha wrote: > > I am using OVS in my research work and I plan to run a simulation where I > > create a high number of queues in each port (to support BW slicing) of > each > > OVS instance. Can somebody please tell me what is the maximum number of > > queues per port in OVS? And what is the reason for that maximum? > > OVS uses Linux's QoS, so the main limitation is Linux. I think that the > way that OVS configures Linux QoS limits it to about 65000 queues. > > OpenFlow is limited to about 4 billion queues. That's mainly Justin > Pettit's fault, as the guy who said, "Four billion queues ought to be > enough for anyone": > > https://mailman.stanford.edu/pipermail/openflow-spec/2009-August/000394.html >
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