Hi Enno
how are you measuring this 16M vs 21M packets? Where is the exact place where 
you read counters?
Please provide some output from the tools you are using.

Best Regards
Alfredo

> On 26 Jul 2016, at 22:40, Rosinger, Enno (DualStudy) <[email protected]> 
> wrote:
> 
> Hey All,
> 
> I am using PF_Ring in order to load balance my network intrusion detection 
> system Bro.
> 
> Strangely only 16 Million of my 21 Million packet input are recognized by the 
> PF_RING kernel module.
> Nevertheless they end up correctly in the application Bro and can be 
> distributed in terms of load balancing.
> Do you have an idea what causes this loss of 5 Million packets? How can I 
> verify that PF_RING is installed correctly?
> 
> I use Intel Corporation I350 Gigabit Network Connection as NICs. They work 
> with the igb drivers.
> The input rate is 0.5Gb/s = 60k to 80k packets/s and currently I am working 
> without the ZeroCopy drivers
> It is verified that all of my 21 Million packets are received by my NIC’s 
> driver.
> The PF_Ring module itself exists and Bro is running with load balancing.
> 
> Looking forward to your response and hope to solve this problem with you. 
> Below you will find more detailed information about my system.
> If you need something else let me know.
> 
> Best,
> Enno
> 
> Additional information:
> 
> One interesting fact: I cannot run “make” in “PF_RING/userland/examples”, 
> because
> gcc: error: ../libpcap/libpcap.a: No such file or directory
> PF_RING/userland looks like this. Indeed “libpcap” is missing
> c++  examples  examples_zc  fast_bpf  go  lib  libpcap-1.7.4  Makefile  snort 
>  tcpdump-4.7.4
> 
> PF_RING module
> [root@slinky-3-4 ~]# cat /proc/net/pf_ring/info
> PF_RING Version          : 6.5.0 
> (dev:9e221bc0b91040afee98f3e3c22ce83226f63f3e)
> Total rings              : 0
> 
> Standard (non ZC) Options
> Ring slots               : 32768
> Slot version             : 16
> Capture TX               : No [RX only]
> IP Defragment            : No
> Socket Mode              : Standard
> Total plugins            : 0
> Cluster Fragment Queue   : 0
> Cluster Fragment Discard : 0
> 
> Used NICs
> [rosinger@slinky-3-4 ~]$ lspci | egrep -i --color 'network|ethernet'
> 02:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network 
> Connection (rev 01)
> 02:00.1 Ethernet controller: Intel Corporation I350 Gigabit Network 
> Connection (rev 01)
> 
> NICs Drivers
> [rosinger @slinky-3-4 ~]# ethtool -i eno2
> driver: igb
> version: 5.2.15-k
> firmware-version: 1.61, 0x80000cd5, 1.1067.0
> bus-info: 0000:02:00.1
> supports-statistics: yes
> supports-test: yes
> supports-eeprom-access: yes
> supports-register-dump: yes
> supports-priv-flags: no
> 
> 
> Enno Rosinger
> Student DualStudy Business Informatics - Application Management
> 
> +49 617 22685124 Office
> Hewlett-Packard-Straße 1| 61352 Bad Homburg | Germany
> [email protected] <mailto:[email protected]>
> 
> <image001.png>
> 
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