Hi Alfredo, Thank you for the response. Here is the output you requested:
[root@madmax ~]# pfcount -i zc:enp1s0 Using PF_RING v.7.0.0 Capturing from zc:enp1s0 [mac: 3C:FD:FE:A2:B9:58][if_index: 5][speed: 40000Mb/s] # Device RX channels: 1 # Polling threads: 1 Dumping statistics on /proc/net/pf_ring/stats/7413-enp1s0.682 ========================= Absolute Stats: [1'596'557 pkts total][1'123'809 pkts dropped][70.4% dropped] [472'748 pkts rcvd][478'241'120 bytes rcvd] ========================= ========================= Absolute Stats: [3'105'703 pkts total][2'154'407 pkts dropped][69.4% dropped] [951'296 pkts rcvd][959'971'922 bytes rcvd][951'229.41 pkt/sec][7'679.23 Mbit/sec] ========================= Actual Stats: [478'548 pkts rcvd][1'000.07 ms][478'514.50 pps][3.85 Gbps] ========================= ========================= Absolute Stats: [4'753'113 pkts total][3'317'837 pkts dropped][69.8% dropped] [1'435'276 pkts rcvd][1'449'061'259 bytes rcvd][717'576.28 pkt/sec][5'795.74 Mbit/sec] ========================= Actual Stats: [483'980 pkts rcvd][1'000.10 ms][483'930.63 pps][3.91 Gbps] ========================= ========================= Absolute Stats: [6'388'321 pkts total][4'472'657 pkts dropped][70.0% dropped] [1'915'664 pkts rcvd][1'932'853'839 bytes rcvd][638'461.66 pkt/sec][5'153.52 Mbit/sec] ========================= Actual Stats: [480'388 pkts rcvd][1'000.26 ms][480'260.73 pps][3.87 Gbps] ========================= ========================= Absolute Stats: [8'078'586 pkts total][5'674'602 pkts dropped][70.2% dropped] [2'403'984 pkts rcvd][2'424'236'935 bytes rcvd][600'918.63 pkt/sec][4'847.84 Mbit/sec] ========================= Actual Stats: [488'320 pkts rcvd][1'000.07 ms][488'281.91 pps][3.93 Gbps] ========================= ========================= Absolute Stats: [9'862'549 pkts total][6'968'657 pkts dropped][70.7% dropped] [2'893'892 pkts rcvd][2'917'179'126 bytes rcvd][578'701.89 pkt/sec][4'666.86 Mbit/sec] ========================= Actual Stats: [489'908 pkts rcvd][1'000.14 ms][489'836.48 pps][3.94 Gbps] ========================= ========================= Absolute Stats: [11'655'152 pkts total][8'271'880 pkts dropped][71.0% dropped] [3'383'272 pkts rcvd][3'412'279'814 bytes rcvd][563'801.98 pkt/sec][4'549.08 Mbit/sec] ========================= Actual Stats: [489'380 pkts rcvd][1'000.15 ms][489'304.15 pps][3.96 Gbps] - Mike From: [email protected] [mailto:[email protected]] On Behalf Of Alfredo Cardigliano Sent: Friday, December 15, 2017 10:57 AM To: [email protected] Subject: Re: [Ntop-misc] nProbe Cento Performance Tuning Hi Mike could you try running pfcount -i zc:enp1s0 (configuring the interface with a single RSS queue)? Thank you Alfredo On 15 Dec 2017, at 16:29, Lang, Michael <[email protected]<mailto:[email protected]>> wrote: Hello, I'm in the process of configuring new 40G hardware with nProbe Cento to replace older hardware with 2 x 10G and nProbe. It is going well however I'm not yet getting zero packet loss which is what I was expecting. Packet loss is low but not zero, about 0.1% with traffic rate 13.5 Gbps, 1.7 Mpps. Are there tuning recommendations that I can try to achieve zero packet loss? Here are some details of my environment: OS: CentOS Linux release 7.4.1708 Kernel: Linux cento 3.10.0-693.11.1.el7.x86_64 #1 SMP Mon Dec 4 23:52:40 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux REPO: ntop CentOS Stable CPU: Intel(R) Xeon(R) E3-1275 v6 (4 cores + HT = 8 Logical CPUs) MEM: 8 GB NIC: Intel XL710-QDA1 NIC Driver: i40e_zc v2.2.4 RSS: Auto configured to 8 PFRING: 7.0.0 ($Revision: 7.0.0-stable:f18cdc778a3c957689125dd7c52c40c2277703fa$) Huge pages: 2048 Cento version: nProbe cento v.1.2.171211 1.2-stable:de3cd10fb80990c50e753af6026787fe62b6d2b3:20171211 Cento Invocation: cento --interface zc:enp1s0@[0-7] --lifetime-timeout 300 --v5 <IP>:<PORT> CPU Utilization is generally under 2% for all cores except 7 which is around 10%. Memory Utilization is 5.0 GB / 7.43 GB, no swap usage. - Mike _______________________________________________ Ntop-misc mailing list [email protected]<mailto:[email protected]> http://listgateway.unipi.it/mailman/listinfo/ntop-misc
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