Alright, thank you for the insights. Adil.
On Tue, 7 Jul 2015 at 2:30 am Ben Pfaff <[email protected]> wrote: > 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. >
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