On Fri, Jul 24, 2015 at 11:01:48AM +0000, Unnikannan Nair, Jishnu wrote: > Hi > I'm trying to check if there are any packet loss going on when doing a packet > capture dump using netsniff-ng using tcpreplay. I used netsniff to log the > verbose output of the whole capture and check if there any dropped packets. > The log shows zero dropped packets. So I used a script to add all the packets > captured by netsniff-ng but it seems the value I got is not the same as the > value shown by tcpreplay at the end of the capture, Why is that?? > TCP replay send 27388000 and netsniff-ng gets 27386202 with zero dropped > packets on the log file. > > > TCPreplay : > > tcpreplay -i eth1 -M 90Mbps --loop 100 --preload-pcap --sleep-accel=1 > /share/capture/job1/*.pcap > Output: > Actual: 27388000 packets (13649364800 bytes) sent in 1173.92 seconds. > Rated: 11627168.0 bps, 88.71 Mbps, 23330.38 pps > Statistics for network device: eth1 > Attempted packets: 27388000 > Successful packets: 27388000 > Failed packets: 0 > Retried packets (ENOBUFS): 0 > Retried packets (EAGAIN): 0 > > Netsniff-ng: > > netsniff-ng -d eth1 --out=/share/capture/ --prefix="job1_" -s -ring-size 4096 > --interval 2MiB -f "dst net 224.10.10 or dst net 224.11.11" -b 1-4 -V > > /share/capture.log > > capture log : > > > pcap file I/O method: scatter-gather > RX,V3: 4096.00 MiB, 65536 Blocks, each 65536 Byte allocated > IRQ: eth1:19 > CPU4 > Running! Hang up with ^C!
HI, What is the netsniff-ng version which is used in this particular example ? Or it was compiled from the up-to-date sources ? -- You received this message because you are subscribed to the Google Groups "netsniff-ng" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
