Hi everyone, I just installed the more recent (demo) version of PF_RING DNA driver for ixgbe, in order to make stress tests on a new router platform.
Everything is working fine, except that pfsend utility is usually not sending packet at the configured rate. Don't know if this is related to the demo version of the driver... I am trying to transmit a capture file (containing five packets) at a rate of 1 Gbps: on the first example shown below I am getting more than 7 Mpps which is much more than the rate that pfsend utility is calculating (1488095 pps). On the second example, the rate fits to the calculated rate using exactly the same parameters. Any ideas? First (unsuccessful) example: root@trafficgen:/home/fmayo/PF_RING/userland/examples# ./pfsend -i dna0 -f /home/fmayo/traffic_test.cap -n 0 -r 1 Sending packets on dna0 ################################################### # ERROR: You do not seem to have a valid DNA license for dna0. # ERROR: Please get one at http://shop.ntop.org/. ################################################### # We're now working in demo mode with packet capture # and transmission limited to 5 minutes ################################################### Using PF_RING v.5.2.1 Estimated CPU freq: 3670602000 Hz Number of 64-byte Packet Per Second at 1.00 Gbit/s: 1488095.24 Read 5 packets from pcap file /home/fmayo/traffic_test.cap TX rate: [current 7'627'165.74 pps/6.47 Gbps][average 7'627'165.74 pps/6.47 Gbps][total 7'627'181.00 pkts] TX rate: [current 7'638'615.12 pps/6.48 Gbps][average 7'632'890.61 pps/6.47 Gbps][total 15'266'285.00 pkts] TX rate: [current 7'722'359.60 pps/6.55 Gbps][average 7'662'714.28 pps/6.50 Gbps][total 22'989'162.00 pkts] ...... Second (successful) example: root@trafficgen:/home/fmayo/PF_RING/userland/examples# ./pfsend -i dna0 -f /home/fmayo/traffic_test.cap -n 0 -r 1 Sending packets on dna0 ################################################### # ERROR: You do not seem to have a valid DNA license for dna0. # ERROR: Please get one at http://shop.ntop.org/. ################################################### # We're now working in demo mode with packet capture # and transmission limited to 5 minutes ################################################### Using PF_RING v.5.2.1 Estimated CPU freq: 3693248000 Hz Number of 64-byte Packet Per Second at 1.00 Gbit/s: 1488095.24 Read 5 packets from pcap file /home/fmayo/traffic_test.cap TX rate: [current 1'463'372.07 pps/1.24 Gbps][average 1'463'372.07 pps/1.24 Gbps][total 1'463'375.00 pkts] TX rate: [current 1'402'045.15 pps/1.19 Gbps][average 1'432'708.30 pps/1.21 Gbps][total 2'865'451.00 pkts] ..... root@trafficgen:/proc/net/pf_ring/dev/dna0# cat /proc/net/pf_ring/dev/dna0/info Name: dna0 Index: 10 Address: 00:12:C0:80:15:3E Polling Mode: DNA Type: Ethernet Family: Intel ixgbe 82599 Max # TX Queues: 72 # Used RX Queues: 1 Thanks! Best regards Fernando Mayo
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