Hi Alfredo, I am using PF_RING 6.0.1, intel gigabit adapters: 03:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) 03:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)
with driver from drivers/PF_RING_aware/intel/igb/igb-5.2.5-zc/src drivers loaded withs script load_driver.sh from this directory packet rate is about 53kpkt/s 1. with not modified zcount, I get next output sudo ./zcount -i zc:eth4 -c 99 ..... ========================= Absolute Stats: 537'361 pkts (0 drops) - 256'858'558 bytes Actual Stats: 53'731.73 pps (0.00 drops) - 0.21 Gbps ========================= sudo ./zcount -i eth4 -c 99 .... ========================= Absolute Stats: 376'166 pkts (0 drops) - 179'807'348 bytes Actual Stats: 53'731.08 pps (0.00 drops) - 0.21 Gbps ========================= 2. with modified zcount ( usleep(1) after pfring_zc_recv_pkt line ): sudo ./zcount_slow -i zc:eth4 -c 99 .... ========================= Absolute Stats: 112'809 pkts (24'570 drops) - 53'922'702 bytes Actual Stats: 18'808.28 pps (4'094.62 drops) - 0.07 Gbps ========================= sudo ./zcount_slow -i eth4 -c 99 .... ========================= Absolute Stats: 150'821 pkts (262'184 drops) - 72'092'438 bytes Actual Stats: 18'834.86 pps (34'896.90 drops) - 0.07 Gbps ========================= So, I get wrong drops when run command sudo ./zcount_slow -i zc:eth4 -c 99 Ilya. 2014-09-01 18:29 GMT+04:00 Alfredo Cardigliano <[email protected]>: > Hi Ilya > please provide more details about your configuration in order to reproduce > the issue: > - driver model/version > - ingress packet rate > - command and some output from zcount > > Alfredo > > On 01 Sep 2014, at 15:14, Ilya Gavrilov <[email protected]> wrote: > >> Hello, >> >> I am using pfring in zc mode and want to get number of lost packets on >> interface. >> It seems pfring_zc_stats doesn't get real number in zc mode. >> >> if i add usleep(1); after getting each packet to zcount.c example application >> i get very small Actual stats pps, but Actual stats drop is very >> small, always about 4000. >> >> In non-zc mode i get real number of lost packets. >> >> How can I get real number of lost packets on interface? >> >> Please, help, >> Ilya. >> _______________________________________________ >> Ntop-misc mailing list >> [email protected] >> http://listgateway.unipi.it/mailman/listinfo/ntop-misc > > _______________________________________________ > Ntop-misc mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop-misc _______________________________________________ Ntop-misc mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop-misc
