On Mon, Jul 06, 2015 at 11:28:09AM -1000, Nicholas Bastin wrote: > On Mon, Jul 6, 2015 at 3:46 AM, Adil Ahmad <[email protected]> wrote: > > > I was trying to get flow statistics and the implementation that I'm > > working on requires that I get flow stats in RTT timescales. But, the flow > > statistics show that the packet count counter is updated after almost a > > second for OF 1.0 swtiches using POX. I want the packet counters to be > > updated at every iteration around 1 ms. Is that a limitation with mininet > > or OF 1.0? > > > > This is a limitation of mininet, although what mininet does (and OVS, by > extension) is much closer to what you want than any other OF device will do. > > There is exactly zero chance that a real OF network (or any network) can > update packet counters on a per-ms basis. Most hardware does so on a 1-10s > interval, and the shorter the interval the more sampling is used (and thus > the more inaccurate it may be).
As long as OVS has mentioned mentioned anyway, OVS itself only updates its counters about every second in normal operation. _______________________________________________ discuss mailing list [email protected] http://openvswitch.org/mailman/listinfo/discuss
