Hi Andrew please make sure you disabled multiqueue (RSS=1,1,1,1), please provide cat /proc/net/pf_ring/dev/eth3/info
Alfredo > On 17 Aug 2015, at 15:30, Andrew Howard <[email protected]> wrote: > > > Hi again Alfredo. > > Just to clarify, when I said:- > > If I leave pfcount running on zc:eth3... > > I meant if I leave it running _and_ resend my test transmission. > > Regards > A. > > PS I'm not sure why my messages are showing as separate threads on the > mailing list. Smart phone email... > > > > -- > Andrew Howard > [email protected] > > ----- Reply message ----- > From: "Andrew Howard" <[email protected]> > To: <[email protected]> > Subject: pfcount stats on ZC interface not as expected > Date: Mon, Aug 17, 2015 13:28 > > . > Hi Alfredo, > > Apologies in advance for any formatting issues - I'm writing this on my HTC > smart(ish) phone. > > The -a active wait option seems to have no effect on pfcount stats, whether > on eth3 or zc:eth3. What would you be expecting? > > I can confirm that ethtool -g reports 32768 for Rx and Tx, for both pre-set > maximums and current hw settings. > > In terms of sustained data rates:- > > When using interface eth3, pfcount reports 95-100% packet reception when the > transmitting Napatech card reports approx 5800 mbps. Higher tx rates lead to > significant packet drop. > > The data rate as reported by pfcount was in the same ballpark - about 5.5gbps. > > When using interface zc eth3, the stats reported by pfcount are always the > same, regardless of the transmission rate. A packet recv count much lower > than it should be, and packets dropped of zero. > > Under the 'actual stats' area the gbps is reported as 0.0, even though > Napatech tx reports 5800 mbps or so. > > If I leave pfcount running on zc:eth3, packets received remains unchanged, > whilst packets dropped increases. > > Again, I'm continuing to investigate things here, but any suggestions would > be welcome. > > Regards, > A. > > -- > Andrew Howard > [email protected] > > _______________________________________________ > Ntop-misc mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop-misc
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