[ovs-discuss] Port counter update frequency

[Tmusic]

2 hosts directly connected to a machine running ovs. The openflow
controller (POX) runs on yet another machine. All bare metal, no VMs.

The goal is to measure the traffic passing through the switch using the
openflow protocol.

Versions:
Open vSwitch 1.7.3
Ubuntu 11.04
Kernel 2.6.38-11-generic-pae




2013/3/15 Ben Pfaff <blp at nicira.com>

> Open vSwitch determines the interval.
>
> What is your test case?
>
> On Fri, Mar 15, 2013 at 09:57:22PM +0100, Tmusic wrote:
> > I checked it multiple times and it seems to be 2.5-2.6s on average
> > openvswitch is polled for its counters using the openflow protocol
> >
> > Is this interval determined by openvswitch or by the linux kernel?
> >
> > Thanks!
> >
> >
> > 2013/3/15 Ben Pfaff <blp at nicira.com>
> >
> > > On Fri, Mar 15, 2013 at 09:24:05PM +0100, Tmusic wrote:
> > > > I'm polling the port the stat counters of openvswitch (with kernel
> > > module)
> > > > and noticed that they are only updated about every 2.5s.
> > >
> > > They should be updated about once a second.  I'm surprised that you
> > > see anything different.
> > >
>
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